fix: format all cpp codes

AcWing/843/843.cpp

@@ -27,8 +27,8 @@ void dfs(int u) {
 
 int main() {
     cin >> n;
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
-        for(int j = 0 ; j < n ; j++) {
+        for (int j = 0; j < n; j++) {
             g[i][j] = '.';
         }
     }

AtCoder/ABC225/A/A.cpp

@@ -8,7 +8,8 @@ string s;
 int main() {
     cin >> s;
     sort(s.begin(), s.end());
-    do ans++;
+    do
+        ans++;
     while (next_permutation(s.begin(), s.end()));
     cout << ans << endl;
     return 0;

LibreOJ/10127/10127.cpp

@@ -45,8 +45,10 @@ void modify(int u, int x, int v) {
         return;
     }
     int mid = tr[u].l + tr[u].r >> 1;
-    if (x <= mid) modify(u << 1, x, v);
+    if (x <= mid)
-    else modify(u << 1 | 1, x, v);
+        modify(u << 1, x, v);
+    else
+        modify(u << 1 | 1, x, v);
     pushup(u);
 }
 

LibreOJ/4/4.cpp

@@ -1,3 +1,5 @@
-#include<stdio.h>
+#include <stdio.h>
-char s[]="#include<stdio.h>%cchar%cs[]=%c%s%c%c%cint main(){printf(s,10,32,34,s,34,59,10);}";
+char s[] = "#include<stdio.h>%cchar%cs[]=%c%s%c%c%cint main(){printf(s,10,32,34,s,34,59,10);}";
-int main(){printf(s,10,32,34,s,34,59,10);}
+int main() {
+    printf(s, 10, 32, 34, s, 34, 59, 10);
+}

LibreOJ/6/6.cpp

@@ -1,6 +1,7 @@
-#include "interaction.h"
 #include <bits/stdc++.h>
 
+#include "interaction.h"
+
 using namespace std;
 
 int n;

Luogu/CF12A/CF12A.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -10,8 +10,8 @@ int main() {
     s += t;
     cin >> t;
     s += t;
-    for(int i = 0 ; i < 9 ; i++) {
+    for (int i = 0; i < 9; i++) {
-        if(s[i] != s[8-i]) {
+        if (s[i] != s[8 - i]) {
             cout << "NO" << endl;
             return 0;
         }

Luogu/CF1421A/CF1421A.cpp

@@ -1,11 +1,11 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
     int t, a, b;
     cin >> t;
-    while(t--) {
+    while (t--) {
         cin >> a >> b;
         cout << a + b - (a & b) * 2 << endl;
     }

Luogu/CF1445A/CF1445A.cpp

@@ -25,11 +25,9 @@ int main() {
         }
         if (flag) {
             cout << "No" << endl;
-        }
+        } else {
-        else {
             cout << "Yes" << endl;
         }
     }
     return 0;
 }
-

Luogu/CF25A/CF25A.cpp

@@ -9,12 +9,11 @@ int main() {
     for (int i = 0; i < n; i++) {
         if (i >= 3) {
             cin >> t;
-        }
+        } else {
-        else {
             t = a[i];
         }
         if (t % 2 != o) {
-            cout << i+1 << endl;
+            cout << i + 1 << endl;
             return 0;
         }
     }

Luogu/CF6A/CF6A.cpp

@@ -10,11 +10,9 @@ int main() {
     // abc abd acd bcd
     if (a + b > c && a + c > b && b + c > a || a + b > d && a + d > b && b + d > a || a + c > d && a + d > c && c + d > a || b + c > d && b + d > c && c + d > b) {
         cout << "TRIANGLE" << endl;
-    }
+    } else if (a + b >= c && a + c >= b && b + c >= a || a + b >= d && a + d >= b && b + d >= a || a + c >= d && a + d >= c && c + d >= a || b + c >= d && b + d >= c && c + d >= b) {
-    else if (a + b >= c && a + c >= b && b + c >= a || a + b >= d && a + d >= b && b + d >= a || a + c >= d && a + d >= c && c + d >= a || b + c >= d && b + d >= c && c + d >= b) {
         cout << "SEGMENT" << endl;
-    }
+    } else {
-    else {
         cout << "IMPOSSIBLE" << endl;
     }
     return 0;

Luogu/CF845C/CF845C.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -10,20 +10,18 @@ int main() {
     int n;
     pair<int, int> p[200005];
     cin >> n;
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
         cin >> p[i].first >> p[i].second;
     }
-    sort(p, p+n, cmp);
+    sort(p, p + n, cmp);
     int tv1 = -1, tv2 = -1;
-    for(int i = 0 ; i  < n ; i++) {
+    for (int i = 0; i < n; i++) {
-        if(p[i].first > tv1) {
+        if (p[i].first > tv1) {
             tv1 = p[i].second;
-        }
+        } else {
-        else {
+            if (p[i].first > tv2) {
-            if(p[i].first > tv2) {
                 tv2 = p[i].second;
-            }
+            } else {
-            else {
                 cout << "NO" << endl;
                 return 0;
             }

Luogu/P1002/P1002.cpp

@@ -23,8 +23,7 @@ int main() {
         for (int j = 2; j <= by; j++) {
             if (b[i][j]) {
                 continue;
-            }
+            } else {
-            else {
                 f[i][j] = max(f[i][j], f[i - 1][j] + f[i][j - 1]);
             }
         }

Luogu/P1015/P1015.cpp

@@ -18,14 +18,12 @@ string add(string b, int k) {
     for (int i = 0; i < len; i++) {
         if (isdigit(a[i])) {
             numa[len - i] = a[i] - '0';
-        }
+        } else {
-        else {
             numa[len - i] = a[i] - 'A' + 10;
         }
         if (isdigit(b[i])) {
             numb[len - i] = b[i] - '0';
-        }
+        } else {
-        else {
             numb[len - i] = b[i] - 'A' + 10;
         }
     }

Luogu/P1020/P1020.cpp

@@ -5,25 +5,25 @@ using namespace std;
 int n, l1, l2, a[100005], d1[100005], d2[100005];
 
 int main() {
-    while (cin >> a[++n]);
+    while (cin >> a[++n])
+        ;
     n--;
     d1[++l1] = d2[++l2] = a[1];
     for (int i = 2; i <= n; i++) {
         if (d1[l1] >= a[i]) {
             d1[++l1] = a[i];
-        }
+        } else {
-        else {
             int* it = upper_bound(d1 + 1, d1 + 1 + l1, a[i], greater<int>());
             *it = a[i];
         }
         if (d2[l2] < a[i]) {
             d2[++l2] = a[i];
-        }
+        } else {
-        else {
             int* it = lower_bound(d2 + 1, d2 + 1 + l2, a[i], less<int>());
             *it = a[i];
         }
     }
-    cout << l1 << endl << l2 << endl;
+    cout << l1 << endl
+         << l2 << endl;
     return 0;
 }

Luogu/P1060/P1060.cpp

@@ -14,8 +14,7 @@ int main() {
         for (int j = 0; j <= n; j++) {
             if (j >= v[i]) {
                 f[i][j] = max(f[i - 1][j], f[i - 1][j - v[i]] + w[i]);
-            }
+            } else {
-            else {
                 f[i][j] = f[i - 1][j];
             }
         }

Luogu/P1068/P1068.cpp

@@ -21,8 +21,7 @@ int main() {
     if (n == 5 && m == 3) {
         printf("78 4\n2783 95\n9323 89\n7972 88\n2538 78");
         return 0;
-    }
+    } else if (n == 87 && m == 35) {
-    else if (n == 87 && m == 35) {
         printf("77 52\n5081 100\n8736 100\n2855 99\n6347 99\n3191 96\n6090 95\n9917 95\n1832 94\n3169 92\n3404 92\n6982 92\n9494 92\n3535 91\n8569 91\n9319 90\n1896 89\n9701 89\n3321 88\n6017 88\n6158 88\n6361 88\n7353 88\n4011 87\n4967 87\n8017 87\n8944 87\n4746 86\n7313 86\n7486 86\n9250 86\n4808 85\n4982 85\n6979 85\n7327 85\n7887 85\n7651 84\n8456 84\n8850 84\n1423 83\n7889 82\n6891 81\n8779 81\n1174 80\n4116 80\n4141 80\n5473 80\n7172 79\n8562 79\n5392 78\n4301 77\n4551 77\n5498 77\n");
         return 0;
     }

Luogu/P1079/P1079.cpp

@@ -8,10 +8,9 @@ int main() {
     cin >> k >> c;
     for (int i = 0; i < c.size(); i++) {
         t = (k[i % k.size()] & 31) - 1;
-        if((c[i] & 31) - t > 0) {
+        if ((c[i] & 31) - t > 0) {
             c[i] = c[i] - t;
-        }
+        } else {
-        else {
             c[i] = c[i] - t + 26;
         }
     }

Luogu/P1093/P1093.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -18,8 +18,8 @@ struct node {
 };
 
 bool cmp(node a, node b) {
-    if(a.all == b.all) {
+    if (a.all == b.all) {
-        if(a.chinese == b.chinese) {
+        if (a.chinese == b.chinese) {
             return a.id < b.id;
         }
         return a.chinese > b.chinese;
@@ -31,13 +31,13 @@ int main() {
     int n;
     node a[305];
     cin >> n;
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
         cin >> a[i].chinese >> a[i].math >> a[i].english;
         a[i].all = a[i].chinese + a[i].math + a[i].english;
-        a[i].id = i+1;
+        a[i].id = i + 1;
     }
-    sort(a, a+n, cmp);
+    sort(a, a + n, cmp);
-    for(int i = 0 ; i < 5 ; i++) {
+    for (int i = 0; i < 5; i++) {
         cout << a[i].id << ' ' << a[i].all << endl;
     }
     return 0;

Luogu/P1094/P1094.cpp

@@ -15,8 +15,7 @@ int main() {
             l++;
             r--;
             ans++;
-        }
+        } else {
-        else {
             r--;
             ans++;
         }

Luogu/P1109/P1109.cpp

@@ -14,15 +14,13 @@ int main() {
     for (int i = 0; i < n; i++) {
         if (a[i] > r) {
             p += a[i] - r;
-        }
+        } else if (a[i] < l) {
-        else if (a[i] < l) {
             q += l - a[i];
         }
     }
     if (n * r < sum) {
         cout << -1 << endl;
-    }
+    } else {
-    else {
         cout << max(p, q) << endl;
     }
     return 0;

Luogu/P1130/P1130.cpp

@@ -1,23 +1,23 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
     long long n, m, a[2005][2005], f[2005][2005];
     cin >> n >> m;
-    for(int i = 1 ; i <= m ; i++) {
+    for (int i = 1; i <= m; i++) {
-        for(int j = 1 ; j <= n ; j++) {
+        for (int j = 1; j <= n; j++) {
             cin >> a[j][i];
         }
     }
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
-        f[i-1][0] = f[i-1][m];
+        f[i - 1][0] = f[i - 1][m];
-        for(int j = 1 ; j <= m ; j++) {
+        for (int j = 1; j <= m; j++) {
-            f[i][j] = a[i][j] + min(f[i-1][j], f[i-1][j-1]);
+            f[i][j] = a[i][j] + min(f[i - 1][j], f[i - 1][j - 1]);
         }
     }
     long long ans = f[n][1];
-    for(int i = 2 ; i <= m ; i++) {
+    for (int i = 2; i <= m; i++) {
         ans = min(ans, f[n][i]);
     }
     cout << ans << endl;

Luogu/P1138/P1138.cpp

@@ -14,8 +14,7 @@ int main() {
     n = unique(a, a + n) - a;
     if (k >= n) {
         cout << "NO RESULT" << endl;
-    }
+    } else {
-    else {
         cout << a[--k];
     }
     return 0;

Luogu/P1152/P1152.cpp

@@ -1,6 +1,6 @@
 // R38820772
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -9,12 +9,12 @@ int n, a[1005];
 
 int main() {
     cin >> n;
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
-        cin >>a[i];
+        cin >> a[i];
     }
-    for(int i = 1 ; i < n ; i++) {
+    for (int i = 1; i < n; i++) {
-        if(!cnt[abs(a[i]-a[i-1])]) {
+        if (!cnt[abs(a[i] - a[i - 1])]) {
-            cnt[abs(a[i]-a[i-1])] = true;
+            cnt[abs(a[i] - a[i - 1])] = true;
         } else {
             cout << "Not jolly" << endl;
             return 0;

Luogu/P1161/P1161.cpp

@@ -1,6 +1,6 @@
 // R36448353
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -10,10 +10,10 @@ int main() {
     double a;
     n = t = ans = 0;
     cin >> n;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
         cin >> a >> t;
-        for(int j = 1 ; j <= t ; j++) {
+        for (int j = 1; j <= t; j++) {
-            ans ^= int(j*a);
+            ans ^= int(j * a);
         }
     }
     cout << ans << endl;

Luogu/P1162/P1162.cpp

@@ -23,8 +23,7 @@ int main() {
             cin >> a[i][j];
             if (a[i][j] == 0) {
                 b[i][j] = 0;
-            }
+            } else {
-            else {
                 b[i][j] = 1;
             }
         }
@@ -34,11 +33,9 @@ int main() {
         for (int j = 1; j <= n; j++) {
             if (b[i][j] == 2) {
                 cout << "0 ";
-            }
+            } else if (b[i][j] == 0) {
-            else if (b[i][j] == 0) {
                 cout << "2 ";
-            }
+            } else {
-            else {
                 cout << "1 ";
             }
         }

Luogu/P1163/P1163.cpp

@@ -11,8 +11,7 @@ int main() {
         mid = (l + r) / 2;
         if (pow(1.0 / (1.0 + mid), k) >= 1 - n / m * mid) {
             r = mid;
-        }
+        } else {
-        else {
             l = mid;
         }
     }

Luogu/P1168/P1168.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -7,24 +7,23 @@ int main() {
     priority_queue<int, vector<int>, less<int> > s;
     priority_queue<int, vector<int>, greater<int> > l;
     cin >> n;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
         cin >> a[i];
-        k = i/2+1;
+        k = i / 2 + 1;
-        if(!l.empty() && a[i] >= l.top()) {
+        if (!l.empty() && a[i] >= l.top()) {
             s.push(a[i]);
-        }
+        } else {
-        else {
             l.push(a[i]);
         }
-        while(l.size() < k) {
+        while (l.size() < k) {
             l.push(s.top());
             s.pop();
         }
-        while(s.size() < k) {
+        while (s.size() < k) {
             s.push(l.top());
             l.pop();
         }
-        if(i%2) {
+        if (i % 2) {
             cout << s.top() << endl;
         }
     }

Luogu/P1170/P1170.cpp

@@ -1,21 +1,21 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int gcd(int a, int b) {
-    if(b == 0) {
+    if (b == 0) {
         return a;
     }
-    return gcd(b, a%b);
+    return gcd(b, a % b);
 }
 
 int main() {
     int t;
     cin >> t;
-    while(t--) {
+    while (t--) {
         int ax, ay, bx, by;
         cin >> ax >> ay >> bx >> by;
-        cout << (gcd(abs(ax-bx), abs(ay-by)) == 1 ? "no" : "yes") << endl;
+        cout << (gcd(abs(ax - bx), abs(ay - by)) == 1 ? "no" : "yes") << endl;
     }
     return 0;
 }

Luogu/P1181/P1181.cpp

@@ -10,8 +10,7 @@ int main() {
         if (sum + t > m) {
             ans++;
             sum = t;
-        }
+        } else {
-        else {
             sum += t;
         }
     }

Luogu/P1182/P1182.cpp

@@ -9,8 +9,7 @@ bool check(int x) {
     for (int i = 1; i <= n; i++) {
         if (tot + a[i] <= x) {
             tot += a[i];
-        }
+        } else {
-        else {
             tot = a[i];
             num++;
         }
@@ -28,8 +27,7 @@ int main() {
         mid = l + r >> 1;
         if (check(mid)) {
             l = mid + 1;
-        }
+        } else {
-        else {
             r = mid - 1;
         }
     }

Luogu/P1198/P1198.cpp

@@ -26,12 +26,10 @@ int main() {
         if (op == 'A') {
             a[++n] = (x + t) % d;
             change(n);
-        }
+        } else if (op == 'Q') {
-        else if (op == 'Q') {
             if (x == 1) {
                 cout << (t = a[n]) << endl;
-            }
+            } else {
-            else {
                 cout << (t = find(n - x + 1, n)) << endl;
             }
         }

Luogu/P1200/P1200.cpp

@@ -8,16 +8,22 @@ int main() {
     getline(cin, a);
     getline(cin, b);
     for (int i = 0; i < 7; i++) {
-        if (a[i] <= 0) break;
+        if (a[i] <= 0)
-        else us *= a[i] - 64;
+            break;
+        else
+            us *= a[i] - 64;
     }
     for (int i = 0; i < 7; i++) {
-        if (b[i] <= 0) break;
+        if (b[i] <= 0)
-        else zs *= b[i] - '@';
+            break;
+        else
+            zs *= b[i] - '@';
     }
     us %= 47;
     zs %= 47;
-    if (us == zs) cout << "GO" << endl;
+    if (us == zs)
-    else cout << "STAY" << endl;
+        cout << "GO" << endl;
+    else
+        cout << "STAY" << endl;
     return 0;
 }

Luogu/P1204/P1204.cpp

@@ -26,8 +26,7 @@ int main() {
     for (int i = 1; i < n; i++) {
         if (a[i].start <= end) {
             end = max(end, a[i].end);
-        }
+        } else {
-        else {
             ans1 = max(ans1, end - start);
             ans2 = max(ans2, a[i].start - end);
             start = a[i].start;

Luogu/P1205/P1205.cpp

@@ -1,6 +1,6 @@
 // R36572888
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 

Luogu/P1216/P1216.cpp

@@ -1,23 +1,23 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
     int n, a[1005][1005], f[1005][1005];
     cin >> n;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
-        for(int j = 1 ; j <= i ; j++) {
+        for (int j = 1; j <= i; j++) {
             cin >> a[i][j];
         }
     }
     f[1][1] = a[1][1];
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
-        for(int j = 1 ; j <= i+1 ; j++) {
+        for (int j = 1; j <= i + 1; j++) {
-            f[i][j] = a[i][j] + max(f[i-1][j], f[i-1][j-1]);
+            f[i][j] = a[i][j] + max(f[i - 1][j], f[i - 1][j - 1]);
         }
     }
     int ans = -0x3f3f3f;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
         ans = max(ans, f[n][i]);
     }
     cout << ans << endl;

Luogu/P1241/P1241.cpp

@@ -22,12 +22,10 @@ int main() {
             if (st.empty() || b[st.top()] != s[i]) {
                 if (s[i] == ')') {
                     b[i] = '(';
-                }
+                } else {
-                else {
                     b[i] = '[';
                 }
-            }
+            } else {
-            else {
                 b[st.top()] = ' ';
                 st.pop();
             }

Luogu/P1271/P1271.cpp

@@ -1,17 +1,17 @@
 // R38787626
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
     int n, m, a[2000005];
     cin >> n >> m;
-    for(int i = 0 ; i < m ; i++) {
+    for (int i = 0; i < m; i++) {
         cin >> a[i];
     }
-    sort(a, a+m);
+    sort(a, a + m);
-    for(int i = 0 ; i < m ; i++) {
+    for (int i = 0; i < m; i++) {
         cout << a[i] << ' ';
     }
     cout << endl;

Luogu/P1320/P1320.cpp

@@ -14,15 +14,15 @@ int main() {
 
     cin >> s[0];
     n = s[0].size();
-    for(int i = 1 ; i < n ; i++) {
+    for (int i = 1; i < n; i++) {
         cin >> s[i];
     }
 
     cout << n << " ";
 
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
-        for(int j = 0 ; j < n ; j++) {
+        for (int j = 0; j < n; j++) {
-            if(s[i][j] == l) {
+            if (s[i][j] == l) {
                 c++;
             } else {
                 cout << c << " ";  // 输出以前统计完的

Luogu/P1321/P1321.cpp

@@ -17,6 +17,7 @@ int main() {
         girl += (s[i] == 'g' || s[i + 1] == 'i' || s[i + 2] == 'r' || s[i + 3] == 'l');
     }
 
-    cout << boy << endl << girl << endl;
+    cout << boy << endl
+         << girl << endl;
     return 0;
 }

Luogu/P1359/P1359.cpp

@@ -12,7 +12,7 @@ int main() {
         f[i] = 0x3f3f3f;
     }
     f[n] = 0;
-    for (int i = n-1; i >= 0; i--) {
+    for (int i = n - 1; i >= 0; i--) {
         for (int j = i + 1; j <= n; j++) {
             f[i] = min(f[i], f[j] + a[i][j]);
         }

Luogu/P1438/P1438.cpp

@@ -6,17 +6,17 @@ int n, m, op, l, r, k, d, p, a[100005];
 
 int main() {
     cin >> n >> m;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
         cin >> a[i];
     }
-    for(int i = 0 ; i < m ; i++) {
+    for (int i = 0; i < m; i++) {
         cin >> op;
-        if(op == 1) {
+        if (op == 1) {
             cin >> l >> r >> k >> d;
-            for(int j = l ; j <= r ; j++) {
+            for (int j = l; j <= r; j++) {
                 a[j] += k + (j - l) * d;
             }
-        } else if(op == 2) {
+        } else if (op == 2) {
             cin >> p;
             cout << a[p] << endl;
         }

Luogu/P1449/P1449.cpp

@@ -10,24 +10,21 @@ int main() {
         if (ch == '.') {
             st.push(t);
             t = 0;
-        }
+        } else if ('0' <= ch && ch <= '9') {
-        else if('0' <= ch && ch <= '9') {
             t *= 10;
             t += ch - '0';
-        }
+        } else {
-        else {
+            b = st.top();
-            b = st.top(); st.pop();
+            st.pop();
-            a = st.top(); st.pop();
+            a = st.top();
+            st.pop();
             if (ch == '+') {
                 st.push(a + b);
-            }
+            } else if (ch == '-') {
-            else if (ch == '-') {
                 st.push(a - b);
-            }
+            } else if (ch == '*') {
-            else if (ch == '*') {
                 st.push(a * b);
-            }
+            } else if (ch == '/') {
-            else if (ch == '/') {
                 st.push(a / b);
             }
         }

Luogu/P1531/P1531.cpp

@@ -43,8 +43,7 @@ void modify(int u, int x, int d) {
     int mid = tr[u].l + tr[u].r >> 1;
     if (x <= mid) {
         modify(u << 1, x, d);
-    }
+    } else {
-    else {
         modify(u << 1 | 1, x, d);
     }
     pushup(u);
@@ -75,8 +74,7 @@ int main() {
         cin >> op >> x >> y;
         if (op == 'U') {
             modify(1, x, y);
-        }
+        } else if (op == 'Q') {
-        else if (op == 'Q') {
             cout << query(1, x, y) << endl;
         }
     }

Luogu/P1551/P1551.cpp

@@ -22,8 +22,7 @@ int main() {
         cin >> x >> y;
         if (find(x) == find(y)) {
             cout << "Yes" << endl;
-        }
+        } else {
-        else {
             cout << "No" << endl;
         }
     }

Luogu/P1554/P1554.cpp

@@ -8,12 +8,12 @@ int n, m, js[10];
 
 int main() {
     cin >> n >> m;
-	for(int i = n ; i <= m ; i++) {
+    for (int i = n; i <= m; i++) {
-        for(int j = i ; j ; j /= 10) {
+        for (int j = i; j; j /= 10) {
-            js[j%10]++;
+            js[j % 10]++;
         }
     }
-	for(int i = 0 ; i < 10 ; i++) {
+    for (int i = 0; i < 10; i++) {
         cout << js[i] << " ";
     }
     return 0;

Luogu/P1563/P1563.cpp

@@ -22,16 +22,13 @@ int main() {
         if (a[now].towards == 0) {
             if (x == 0) {
                 now = (now + n - y) % n;
-            }
+            } else if (x == 1) {
-            else if (x == 1) {
                 now = (now + y) % n;
             }
-        }
+        } else if (a[now].towards == 1) {
-        else if (a[now].towards == 1) {
             if (x == 0) {
                 now = (now + y) % n;
-            }
+            } else if (x == 1) {
-            else if (x == 1) {
                 now = (now + n - y) % n;
             }
         }

Luogu/P1567/P1567.cpp

@@ -12,8 +12,7 @@ int main() {
     for (int i = 1; i < n; i++) {
         if (a[i] > a[i - 1]) {
             f[i] = f[i - 1] + 1;
-        }
+        } else {
-        else {
             f[i] = 0;
         }
     }

Luogu/P1597/P1597.cpp

@@ -1,6 +1,6 @@
 // https://www.luogu.com.cn/record/38654562
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -11,14 +11,14 @@ int main() {
     a = b = c = 0;
     cin >> s;
 
-    for(int i = 0 ; i < s.size() ; i += 5) {
+    for (int i = 0; i < s.size(); i += 5) {
-        cout << s[i] << ' ' << s[i+3] << ' ';
+        cout << s[i] << ' ' << s[i + 3] << ' ';
-        switch(s[i]) {
+        switch (s[i]) {
             case 'a':
-                if('0' <= s[i+3] && s[i+3] <= '9') {
+                if ('0' <= s[i + 3] && s[i + 3] <= '9') {
-                    a = s[i+3] - '0';
+                    a = s[i + 3] - '0';
                 } else {
-                    switch(s[i+3]) {
+                    switch (s[i + 3]) {
                         case 'a':
                             a = a;
                             break;
@@ -32,10 +32,10 @@ int main() {
                 }
                 break;
             case 'b':
-                if('0' <= s[i+3] && s[i+3] <= '9') {
+                if ('0' <= s[i + 3] && s[i + 3] <= '9') {
-                    b = s[i+3] - '0';
+                    b = s[i + 3] - '0';
                 } else {
-                    switch(s[i+3]) {
+                    switch (s[i + 3]) {
                         case 'a':
                             b = a;
                             break;
@@ -49,10 +49,10 @@ int main() {
                 }
                 break;
             case 'c':
-                if('0' <= s[i+3] && s[i+3] <= '9') {
+                if ('0' <= s[i + 3] && s[i + 3] <= '9') {
-                    c = s[i+3] - '0';
+                    c = s[i + 3] - '0';
                 } else {
-                    switch(s[i+3]) {
+                    switch (s[i + 3]) {
                         case 'a':
                             c = a;
                             break;

Luogu/P1598/P1598.cpp

@@ -30,8 +30,7 @@ int main() {
             if (cnt[j] == max) {
                 printf("%s%c", j == 0 ? "" : " ", '*');
                 cnt[j]--;
-            }
+            } else {
-            else {
                 printf("%s%s", j == 0 ? "" : " ", " ");
             }
         }

Luogu/P1603/P1603.cpp

@@ -1,98 +1,98 @@
 // https://www.luogu.com.cn/record/20137358
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
-long long c = 0, word[6] = {0,0,0,0,0,0}, out = 0;
+long long c = 0, word[6] = {0, 0, 0, 0, 0, 0}, out = 0;
 
 int getst(string s, long long &c) {
-    if(s=="one" || s=="a" || s=="first" || s=="another") {
+    if (s == "one" || s == "a" || s == "first" || s == "another") {
-        word[c] = 1 ;
+        word[c] = 1;
         c++;
         return 0;
     }
-    if(s == "two" || s == "both" || s == "second") {
+    if (s == "two" || s == "both" || s == "second") {
         word[c] = 4;
         c++;
         return 0;
     }
-    if(s == "three" || s == "third") {
+    if (s == "three" || s == "third") {
-        word[c]=9;
+        word[c] = 9;
         c++;
         return 0;
     }
-    if(s == "four") {
+    if (s == "four") {
         word[c] = 16;
         c++;
         return 0;
     }
-    if(s == "five") {
+    if (s == "five") {
         word[c] = 25;
         c++;
         return 0;
     }
-    if(s == "six") {
+    if (s == "six") {
         word[c] = 36;
         c++;
         return 0;
     }
-    if(s == "seven") {
+    if (s == "seven") {
         word[c] = 49;
         c++;
         return 0;
     }
-    if(s == "eight") {
+    if (s == "eight") {
         word[c] = 64;
         c++;
         return 0;
     }
-    if(s == "nine") {
+    if (s == "nine") {
         word[c] = 81;
         c++;
         return 0;
     }
-    if(s == "eleven") {
+    if (s == "eleven") {
         word[c] = 21;
         c++;
         return 0;
     }
-    if(s == "twelve") {
+    if (s == "twelve") {
         word[c] = 44;
         c++;
         return 0;
     }
-    if(s == "thirteen") {
+    if (s == "thirteen") {
         word[c] = 69;
         c++;
         return 0;
     }
-    if(s == "fourteen") {
+    if (s == "fourteen") {
         word[c] = 96;
         c++;
         return 0;
     }
-    if(s == "fifteen") {
+    if (s == "fifteen") {
         word[c] = 25;
         c++;
         return 0;
     }
-    if(s == "sixteen") {
+    if (s == "sixteen") {
         word[c] = 56;
         c++;
         return 0;
     }
-    if(s == "seventeen") {
+    if (s == "seventeen") {
         word[c] = 89;
         c++;
         return 0;
     }
-    if(s == "eightteen") {
+    if (s == "eightteen") {
         word[c] = 24;
         c++;
         return 0;
     }
-    if(s == "nineteen") {
+    if (s == "nineteen") {
         word[c] = 61;
         c++;
         return 0;
@@ -101,15 +101,15 @@ int getst(string s, long long &c) {
 
 int main(void) {
     string getit[6];
-    for (int i = 0 ; i < 6 ; i++) {
+    for (int i = 0; i < 6; i++) {
         cin >> getit[i];
-        if (getit[i][getit[i].size()-1] == '.') {
+        if (getit[i][getit[i].size() - 1] == '.') {
-            getit[i].erase(getit[i].size()-1,1);
+            getit[i].erase(getit[i].size() - 1, 1);
         }
-        getst(getit[i] , c);
+        getst(getit[i], c);
     }
-    sort(word , word + c);
+    sort(word, word + c);
-    for(int i = 0 ; i < c ; i++) {
+    for (int i = 0; i < c; i++) {
         out += word[i];
         out *= 100;
     }

Luogu/P1605/P1605.cpp

@@ -23,7 +23,7 @@ void dfs(int x, int y) {
 
 int main() {
     cin >> n >> m >> t >> sx >> sy >> fx >> fy;
-    for(int i = 0 ; i < t ; i++) {
+    for (int i = 0; i < t; i++) {
         int x, y;
         cin >> x >> y;
         vis[x][y] = -1;

Luogu/P1614/P1614.cpp

@@ -5,14 +5,14 @@
 using namespace std;
 
 int main() {
-    int n, m, a[100005], minn=100000, t=0;
+    int n, m, a[100005], minn = 100000, t = 0;
     cin >> n >> m;
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
         cin >> a[i];
     }
-    for(int i = 1 ; i <= n-m+1 ; i++) {
+    for (int i = 1; i <= n - m + 1; i++) {
-        for(int j = 1 ; j <= m ; j++) {
+        for (int j = 1; j <= m; j++) {
-            t += a[i+j-1];
+            t += a[i + j - 1];
         }
         minn = min(t, minn);
         t = 0;

Luogu/P1634/P1634.cpp

@@ -1,12 +1,12 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
-    unsigned long long x, n, ans=1;
+    unsigned long long x, n, ans = 1;
     cin >> x >> n;
-    for(unsigned long long i = 0 ; i < n ; i++) {
+    for (unsigned long long i = 0; i < n; i++) {
-        ans += ans*x;
+        ans += ans * x;
     }
     cout << ans << endl;
     return 0;

Luogu/P1664/P1664.cpp

@@ -32,8 +32,7 @@ int main() {
             if (d >= 365) {
                 ans++;
             }
-        }
+        } else {
-        else {
             m++;
         }
     }

Luogu/P1678/P1678.cpp

@@ -15,11 +15,9 @@ int main() {
         int p = lower_bound(a, a + m, q) - a;
         if (p == m) {
             ans += q - a[m - 1];
-        }
+        } else if (p == 0) {
-        else if (p == 0) {
             ans += a[0] - q;
-        }
+        } else {
-        else {
             ans += min(abs(a[p] - q), abs(q - a[p - 1]));
         }
     }

Luogu/P1679/P1679.cpp

@@ -16,7 +16,7 @@ void dfs(int cnt, int k, int last) {
         return;
     }
     int i = last;
-    while (i*i*i*i <= n - cnt) {
+    while (i * i * i * i <= n - cnt) {
         i++;
     }
     while (i >= last) {

Luogu/P1706/P1706.cpp

@@ -8,10 +8,10 @@ int main() {
     int n, a[11] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
     scanf("%d", &n);
     do {
-        for (int i = 0; i < n-1; i++) {
+        for (int i = 0; i < n - 1; i++) {
             printf("%5d", a[i]);
         }
-        printf("%5d\n", a[n-1]);
+        printf("%5d\n", a[n - 1]);
     } while (next_permutation(a, a + n));
     return 0;
 }

Luogu/P1755/P1755.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -7,22 +7,22 @@ const int fib[] = {0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610,
 int main() {
     int t, n;
     cin >> t;
-    while(t--) {
+    while (t--) {
         stack<int> st;
         cin >> n;
         cout << n << "=";
-        for(int i = 45 ; i > 0 ; i--) {
+        for (int i = 45; i > 0; i--) {
-            while(n >= fib[i]) {
+            while (n >= fib[i]) {
                 n -= fib[i];
                 st.push(fib[i]);
             }
-            if(n == 0) {
+            if (n == 0) {
                 break;
             }
         }
         cout << st.top();
         st.pop();
-        while(!st.empty()) {
+        while (!st.empty()) {
             cout << "+" << st.top();
             st.pop();
         }

Luogu/P1765/P1765.cpp

@@ -12,8 +12,7 @@ int main() {
     while (scanf("%c", &c) != EOF) {
         if (c == ' ') {
             cnt++;
-        }
+        } else if ('a' <= c && c <= 'z') {
-        else if('a' <= c && c <= 'z') {
             cnt += num[c - 'a'];
         }
         // cout << c << ' ' << cnt << endl;

Luogu/P1865/P1865.cpp

@@ -30,8 +30,7 @@ int main() {
         cin >> l >> r;
         if (l > m || r > m || l < 1 || r < 1) {
             cout << "Crossing the line" << endl;
-        }
+        } else {
-        else {
             cout << ans[r] - ans[l - 1] << endl;
         }
     }

Luogu/P1873/P1873.cpp

@@ -2,7 +2,6 @@
 
 using namespace std;
 
-
 long long n, m, l, r, ans, a[1000005];
 
 bool check(long long x) {
@@ -25,8 +24,7 @@ int main() {
         long long mid = l + r >> 1;
         if (check(mid)) {
             l = (ans = mid) + 1;
-        }
+        } else {
-        else {
             r = mid - 1;
         }
     }

Luogu/P1883/P1883.cpp

@@ -29,8 +29,7 @@ int main() {
             mid2 = r - (r - l) / 3.0;
             if (check(mid1) > check(mid2)) {
                 l = mid1;
-            }
+            } else {
-            else {
                 r = mid2;
             }
         }

Luogu/P1898/P1898.cpp

@@ -23,11 +23,9 @@ int main() {
     }
     if (ans[3] == 1 && ans[2] == 0 && ans[1] == 0) {
         cout << 100 << endl;
-    }
+    } else if ((ans[2] + ans[3]) % 10) {
-    else if ((ans[2] + ans[3]) % 10) {
         cout << (ans[2] + ans[3]) % 10 << (ans[1] + ans[2]) % 10 << endl;
-    }
+    } else {
-    else {
         cout << (ans[1] + ans[2]) % 10 << endl;
     }
     return 0;

Luogu/P1908/P1908.cpp

@@ -13,8 +13,7 @@ void merge_sort(long long a[], long long l, long long r) {
     while (i <= mid && j <= r) {
         if (a[i] <= a[j]) {
             t[k++] = a[i++];
-        }
+        } else {
-        else {
             t[k++] = a[j++];
             ans += (mid - i + 1);
         }

Luogu/P1928/P1928.cpp

@@ -17,11 +17,9 @@ string cnm() {
             while (n--) {
                 s += str;
             }
-        }
+        } else if (ch == ']') {
-        else if (ch == ']') {
             return s;
-        }
+        } else {
-        else {
             s += ch;
         }
     }

Luogu/P1947/P1947.cpp

@@ -7,8 +7,7 @@ extern "C" int Chtholly(int n, int OvO) {
         if (Seniorious(mid) >= 0) {
             ans = mid;
             r = mid - 1;
-        }
+        } else {
-        else {
             l = mid + 1;
         }
         mid = l + r >> 1;

Luogu/P1983/P1983.cpp

@@ -26,8 +26,7 @@ int main() {
         for (int j = a[1]; j < a[a[0]]; j++) {
             if (a[l] == j) {
                 l++;
-            }
+            } else {
-            else {
                 for (int k = 1; k <= a[0]; k++) {
                     if (!v[a[k]][j]) {
                         int t = a[k];

Luogu/P2023/P2023.cpp

@@ -84,12 +84,10 @@ signed main() {
         if (op == 1) {
             cin >> k;
             modify(1, x, y, k, 0);
-        }
+        } else if (op == 2) {
-        else if (op == 2) {
             cin >> k;
             modify(1, x, y, 1, k);
-        }
+        } else if (op == 3) {
-        else if (op == 3) {
             cout << query(1, x, y) % p << endl;
         }
     }

Luogu/P2068/P2068.cpp

@@ -37,8 +37,10 @@ void modify(int u, int x, int d) {
         return;
     }
     int mid = tr[u].l + tr[u].r >> 1;
-    if (x <= mid) modify(u << 1, x, d);
+    if (x <= mid)
-    else modify(u << 1 | 1, x, d);
+        modify(u << 1, x, d);
+    else
+        modify(u << 1 | 1, x, d);
     pushup(u);
 }
 
@@ -60,8 +62,7 @@ int main() {
         cin >> op >> a >> b;
         if (op == 'x') {
             modify(1, a, b);
-        }
+        } else if (op == 'y') {
-        else if (op == 'y') {
             cout << query(1, a, b) << endl;
         }
     }

Luogu/P2073/P2073.cpp

@@ -28,11 +28,9 @@ int main() {
             long long w, c;
             cin >> w >> c;
             a.insert(node(w, c));
-        }
+        } else if (op == 2 && !a.empty()) {
-        else if (op == 2 && !a.empty()) {
             a.erase(--a.end());
-        }
+        } else if (op == 3 && !a.empty()) {
-        else if (op == 3  && !a.empty()) {
             a.erase(a.begin());
         }
     }

Luogu/P2084/P2084.cpp

@@ -8,7 +8,7 @@ string s;
 int main() {
     cin >> m >> s;
     for (int i = 0; i < s.size(); i++) {
-        if(s[i] == '0') {
+        if (s[i] == '0') {
             continue;
         }
         if (i != 0) {

Luogu/P2249/P2249.cpp

@@ -15,8 +15,7 @@ int main() {
         vector<int>::iterator it = lower_bound(nums.begin(), nums.end(), t);
         if (*it == t) {
             cout << it - nums.begin() + 1 << ' ';
-        }
+        } else {
-        else {
             cout << "-1 ";
         }
     }

Luogu/P2357/P2357.cpp

@@ -80,20 +80,16 @@ int main() {
         if (op == 1) {
             cin >> x >> y >> k;
             modify(1, x, y, k);
-        }
+        } else if (op == 2) {
-        else if(op == 2) {
             cin >> k;
             modify(1, 1, 1, k);
-        }
+        } else if (op == 3) {
-        else if(op == 3) {
             cin >> k;
             modify(1, 1, 1, -k);
-        }
+        } else if (op == 4) {
-        else if(op == 4) {
             cin >> x >> y;
             cout << query(1, x, y) << endl;
-        }
+        } else if (op == 5) {
-        else if(op == 5) {
             cout << query(1, 1, 1) << endl;
         }
     }

Luogu/P2368/P2368.cpp

@@ -1,19 +1,17 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
     int n;
     cin >> n;
-    if(n <= 8) {
+    if (n <= 8) {
         cout << 0 << endl;
-    }
+    } else if (n == 9) {
-    else if(n == 9) {
         cout << 8 << endl;
-    }
+    } else {
-    else {
         cout << 72;
-        for(int i = 10 ; i < n ; i++) {
+        for (int i = 10; i < n; i++) {
             cout << 0;
         }
         cout << endl;

Luogu/P2404/P2404.cpp

@@ -7,10 +7,10 @@ int n, a[10];
 void dfs(int x, int depth, int last) {
     if (x > n) return;
     if (x == n) {
-        for(int i = 1 ; i < depth - 1 ; i++) {
+        for (int i = 1; i < depth - 1; i++) {
             cout << a[i] << '+';
         }
-        cout << a[depth-1] << endl;
+        cout << a[depth - 1] << endl;
         return;
     }
     for (int i = last; i < n; i++) {

Luogu/P2433/P2433.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -7,51 +7,38 @@ int main() {
     cin >> T;
     if (T == 1) {
         cout << "I love Luogu!";
-    }
+    } else if (T == 2) {
-    else if (T == 2) {
         cout << 2 + 4 << " " << 10 - 2 - 4;
-    }
+    } else if (T == 3) {
-    else if (T == 3) {
         cout << 3 << endl
              << 12 << endl
              << 2 << endl;
-    }
+    } else if (T == 4) {
-    else if (T == 4) {
         printf("%.3lf\n", 500.0 / 3.0);
-    }
+    } else if (T == 5) {
-    else if (T == 5) {
         cout << 15 << endl;
-    }
+    } else if (T == 6) {
-    else if (T == 6) {
         cout << sqrt(6 * 6 + 9 * 9) << endl;
-    }
+    } else if (T == 7) {
-    else if (T == 7) {
         cout << 110 << endl
              << 90 << endl
              << 0 << endl;
-    }
+    } else if (T == 8) {
-    else if (T == 8) {
         cout << 3.141593 * 5 * 2 << endl
              << 3.141593 * 5 * 5 << endl
              << 4.0 / 3 * 3.141593 * 5 * 5 * 5 << endl;
-    }
+    } else if (T == 9) {
-    else if (T == 9) {
         cout << 22 << endl;
-    }
+    } else if (T == 10) {
-    else if (T == 10) {
         cout << 9 << endl;
-    }
+    } else if (T == 11) {
-    else if (T == 11) {
         cout << 100.0 / (8 - 5) << endl;
-    }
+    } else if (T == 12) {
-    else if (T == 12) {
         cout << 13 << endl
              << "R" << endl;
-    }
+    } else if (T == 13) {
-    else if (T == 13) {
         cout << floor(pow((3.141593 * 4 * 4 * 4 * 4 / 3 + 3.141593 * 10 * 10 * 10 * 4 / 3), 1.0 / 3)) << endl;
-    }
+    } else if (T == 14) {
-    else if (T == 14) {
         cout << 50 << endl;
     }
     return 0;

Luogu/P2550/P2550.cpp

@@ -8,24 +8,23 @@ int n, win[7], lottery[7], sum[10], c;
 
 int main() {
     cin >> n;
-    for(int i = 0 ; i < 7 ; i++) {
+    for (int i = 0; i < 7; i++) {
         cin >> win[i];
     }
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
         c = 0;
-        for(int j = 0 ; j < 7 ; j++) {
+        for (int j = 0; j < 7; j++) {
             cin >> lottery[j];
-            for(int p = 0 ; p < 7 ; p++) {
+            for (int p = 0; p < 7; p++) {
-                if(lottery[j] == win[p]) c++;
+                if (lottery[j] == win[p]) c++;
             }
         }
         // cout << c << ' ';  // debug
         sum[c]++;
     }
     // cout << endl;  // debug
-    for(int i = 7 ; i > 0 ; i--) {
+    for (int i = 7; i > 0; i--) {
         cout << sum[i] << ' ';
     }
     return 0;
 }
-

Luogu/P2574/P2574.cpp

@@ -81,8 +81,7 @@ int main() {
         cin >> op >> x >> y;
         if (op == 0) {
             modify(1, x, y);
-        }
+        } else if (op == 1) {
-        else if (op == 1) {
             cout << query(1, x, y) << endl;
         }
     }

Luogu/P2676/P2676.cpp

@@ -1,19 +1,19 @@
 // R38819026
 
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
-    int n, h[20005], b, sum=0, i;
+    int n, h[20005], b, sum = 0, i;
     cin >> n >> b;
-    for(i = 0 ; i < n ; i++) {
+    for (i = 0; i < n; i++) {
         cin >> h[i];
     }
-    sort(h, h+n);
+    sort(h, h + n);
-    while(sum < b) {
+    while (sum < b) {
         sum += h[--i];
     }
-    cout << n-i << endl;
+    cout << n - i << endl;
     return 0;
 }

Luogu/P2678/P2678.cpp

@@ -21,7 +21,7 @@ int main() {
     for (int i = 1; i <= n; i++) {
         cin >> a[i];
     }
-    a[n+1] = r;
+    a[n + 1] = r;
     l = 1;
     while (l <= r) {
         mid = l + r >> 1;

Luogu/P2689/P2689.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -6,25 +6,22 @@ int main() {
     int x1, y1, x2, y2, t, ans = 0;
     char c;
     cin >> x1 >> y1 >> x2 >> y2 >> t;
-    for(int i = 1 ; i <= t ; i++) {
+    for (int i = 1; i <= t; i++) {
         cin >> c;
-        if(c == 'E' && y1 < y2) {
+        if (c == 'E' && y1 < y2) {
             y1++;
             ans++;
-        }
+        } else if (c == 'W' && y1 > y2) {
-        else if(c == 'W' && y1 > y2) {
             y1--;
             ans++;
-        }
+        } else if (c == 'N' && x1 < x2) {
-        else if(c == 'N' && x1 < x2) {
             x1++;
             ans++;
-        }
+        } else if (c == 'S' && x1 > x2) {
-        else if(c == 'S' && x1 > x2) {
             x1--;
             ans++;
         }
-        if(x1 == x2 && y1 == y2) {
+        if (x1 == x2 && y1 == y2) {
             cout << ans << endl;
             return 0;
         }

Luogu/P2846/P2846.cpp

@@ -66,11 +66,11 @@ int query(int u, int l, int r) {
 int main() {
     cin >> n >> m;
     build(1, 1, n);
-    for(int i = 0 ; i < m ; i++) {
+    for (int i = 0; i < m; i++) {
         cin >> op >> s >> e;
-        if(op == 0) {
+        if (op == 0) {
             modify(1, s, e);
-        } else if(op == 1) {
+        } else if (op == 1) {
             cout << query(1, s, e) << endl;
         }
     }

Luogu/P2911/P2911.cpp

@@ -8,14 +8,14 @@ int s1, s2, s3;
 
 int main() {
     scanf("%d%d%d", &s1, &s2, &s3);
-    if(s3 > s1 + s2) {
+    if (s3 > s1 + s2) {
-        printf("%d", s1+s2+1);
+        printf("%d", s1 + s2 + 1);
-    } else if(s2 > s1 + s3) {
+    } else if (s2 > s1 + s3) {
-        printf("%d", s1+s3+1);
+        printf("%d", s1 + s3 + 1);
-    } else if(s1 > s3 + s2) {
+    } else if (s1 > s3 + s2) {
-        printf("%d", s3+s2+1);
+        printf("%d", s3 + s2 + 1);
     } else {
-        printf("%d", (s1+s2+s3+3)/2);
+        printf("%d", (s1 + s2 + s3 + 3) / 2);
     }
     return 0;
 }

Luogu/P3150/P3150.cpp

@@ -9,8 +9,7 @@ int main() {
         cin >> t;
         if (t % 2 == 0) {
             cout << "pb wins" << endl;
-        }
+        } else {
-        else {
             cout << "zs wins" << endl;
         }
     }

Luogu/P3156/P3156.cpp

@@ -12,7 +12,7 @@ int main() {
     }
     for (int i = 0; i < m; i++) {
         cin >> q;
-        cout << a[q-1] << endl;
+        cout << a[q - 1] << endl;
     }
     return 0;
 }

Luogu/P3367/P3367.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -11,15 +11,14 @@ int find(int x) {
 int main() {
     int n, m, z, x, y;
     cin >> n >> m;
-    for(int i = 0; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
         f[i] = i;
     }
-    while(m--) {
+    while (m--) {
         cin >> z >> x >> y;
-        if(z == 1) {
+        if (z == 1) {
             f[find(x)] = find(y);
-        }
+        } else {
-        else {
             cout << (find(x) == find(y) ? "Y" : "N") << endl;
         }
     }

Luogu/P3368/P3368.cpp

@@ -81,8 +81,7 @@ int main() {
         if (op == 1) {
             scanf("%d%d", &y, &k);
             modify(1, x, y, k);
-        }
+        } else if (op == 2) {
-        else if (op == 2) {
             printf("%d\n", query(1, x, x));
         }
     }

Luogu/P3369/P3369.cpp

@@ -10,20 +10,15 @@ int main() {
         cin >> opt >> x;
         if (opt == 1) {
             a.insert(lower_bound(a.begin(), a.end(), x), x);
-        }
+        } else if (opt == 2) {
-        else if (opt == 2) {
             a.erase(lower_bound(a.begin(), a.end(), x));
-        }
+        } else if (opt == 3) {
-        else if (opt == 3) {
             cout << lower_bound(a.begin(), a.end(), x) - a.begin() + 1 << endl;
-        }
+        } else if (opt == 4) {
-        else if (opt == 4) {
             cout << a[x - 1] << endl;
-        }
+        } else if (opt == 5) {
-        else if (opt == 5) {
             cout << *(lower_bound(a.begin(), a.end(), x) - 1) << endl;
-        }
+        } else if (opt == 6) {
-        else if (opt == 6) {
             cout << *upper_bound(a.begin(), a.end(), x) << endl;
         }
     }

Luogu/P3372/P3372.cpp

@@ -111,8 +111,7 @@ int main() {
         if (op == 1) {
             cin >> k;
             modify(1, x, y, k);
-        }
+        } else if (op == 2) {
-        else if (op == 2) {
             cout << query(1, x, y) << endl;
         }
     }

Luogu/P3373/P3373.cpp

@@ -118,12 +118,10 @@ signed main() {
         if (op == 1) {
             cin >> k;
             modify(1, x, y, k, 0);
-        }
+        } else if (op == 2) {
-        else if (op == 2) {
             cin >> k;
             modify(1, x, y, 1, k);
-        }
+        } else if (op == 3) {
-        else if (op == 3) {
             cout << query(1, x, y) % p << endl;
         }
     }

Luogu/P3374/P3374.cpp

@@ -40,8 +40,7 @@ void change(int u, int x, int d) {
     int mid = tr[u].l + tr[u].r >> 1;
     if (x <= mid) {
         change(u << 1, x, d);
-    }
+    } else {
-    else {
         change(u << 1 | 1, x, d);
     }
     pushup(u);
@@ -68,8 +67,7 @@ int main() {
         cin >> op >> x >> y;
         if (op == 1) {
             change(1, x, y);
-        }
+        } else if (op == 2) {
-        else if (op == 2) {
             cout << query(1, x, y) << endl;
         }
     }

Luogu/P3378/P3378.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -6,18 +6,16 @@ int main() {
     priority_queue<int, vector<int>, greater<int> > q;
     int n;
     cin >> n;
-    while(n--) {
+    while (n--) {
         int op;
         cin >> op;
-        if(op == 1) {
+        if (op == 1) {
             int x;
             cin >> x;
             q.push(x);
-        }
+        } else if (op == 2) {
-        else if(op == 2) {
             cout << q.top() << endl;
-        }
+        } else if (op == 3) {
-        else if(op == 3) {
             q.pop();
         }
     }

Luogu/P3382/P3382.cpp

@@ -24,8 +24,7 @@ int main() {
         mid2 = r - (r - l) / 3.0;
         if (f(mid1) > f(mid2)) {
             r = mid2;
-        }
+        } else {
-        else {
             l = mid1;
         }
     }

Luogu/P3613/P3613.cpp

@@ -1,4 +1,4 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
@@ -6,21 +6,21 @@ int main() {
     map<int, map<int, int> > m;
     int n, q, t, i, j, k;
     cin >> n >> q;
-    while(q--) {
+    while (q--) {
         cin >> t >> i >> j;
-        if(t == 1) {
+        if (t == 1) {
             cin >> k;
-            if(k == 0) {
+            if (k == 0) {
-                if(m.count(i) && m[i].count(j)) {
+                if (m.count(i) && m[i].count(j)) {
                     m[i].erase(k);
-                    if(m[i].empty()) {
+                    if (m[i].empty()) {
                         m.erase(i);
                     }
                 }
             } else {
                 m[i][j] = k;
             }
-        } else if(t == 2) {
+        } else if (t == 2) {
             cout << m[i][j] << endl;
         }
     }

Luogu/P3717/P3717.cpp

@@ -17,9 +17,9 @@ int main() {
             }
         }
     }
-    for(int i = 1 ; i <= n ; i++) {
+    for (int i = 1; i <= n; i++) {
-        for(int j = 1 ; j <= n ; j++) {
+        for (int j = 1; j <= n; j++) {
-            if(vis[i][j]) {
+            if (vis[i][j]) {
                 ans++;
             }
         }

Luogu/P3741/P3741.cpp

@@ -23,8 +23,7 @@ int main() {
     for (int i = 0; i < str.size(); i++) {
         if (str[i] == 'V') {
             str[i] = 'K';
-        }
+        } else {
-        else {
             str[i] = 'V';
         }
 
@@ -35,8 +34,7 @@ int main() {
         }
         if (str[i] == 'V') {
             str[i] = 'K';
-        }
+        } else {
-        else {
             str[i] = 'V';
         }
     }

Luogu/P3853/P3853.cpp

@@ -22,8 +22,10 @@ int main() {
     }
     while (l < r) {
         int mid = l + r >> 1;
-        if (check(mid)) r = mid;
+        if (check(mid))
-        else l = mid + 1;
+            r = mid;
+        else
+            l = mid + 1;
     }
     cout << l << endl;
     return 0;

Luogu/P3871/P3871.cpp

@@ -1,24 +1,23 @@
-#include<bits/stdc++.h>
+#include <bits/stdc++.h>
 
 using namespace std;
 
 int main() {
-    int n,m, t;
+    int n, m, t;
     string op;
     vector<int> nums;
     cin >> n;
-    for(int i = 0 ; i < n ; i++) {
+    for (int i = 0; i < n; i++) {
         cin >> t;
         nums.insert(lower_bound(nums.begin(), nums.end(), t), t);
     }
     cin >> m;
-    for(int i = 0 ; i < m ; i++) {
+    for (int i = 0; i < m; i++) {
         cin >> op;
-        if(op == "add") {
+        if (op == "add") {
             cin >> t;
             nums.insert(lower_bound(nums.begin(), nums.end(), t), t);
-        }
+        } else {
-        else {
             cout << nums[nums.size() / 2 - (nums.size() & 1 ^ 1)] << endl;
         }
     }

Luogu/P3879/P3879.cpp

@@ -19,8 +19,7 @@ int main() {
         cin >> s;
         if (!m.count(s)) {
             cout << endl;
-        }
+        } else {
-        else {
             for (set<int>::iterator it = m[s].begin(); it != --m[s].end(); it++) {
                 cout << *it << ' ';
             }

Luogu/P3912/P3912.cpp

@@ -5,13 +5,13 @@ using namespace std;
 int main() {
     int n;
     cin >> n;
-    int s = n-1;
+    int s = n - 1;
     bool prime[100000005];
     memset(prime, 0, sizeof(prime));
-    for(int i = 2 ; i*i <= n ; i++) {
+    for (int i = 2; i * i <= n; i++) {
-        if(!prime[i]) {
+        if (!prime[i]) {
-            for(int j = i*2 ; j <= n ; j+= i) {
+            for (int j = i * 2; j <= n; j += i) {
-                if(!prime[j]) {
+                if (!prime[j]) {
                     prime[j] = true;
                     s--;
                 }