diff --git a/Luogu/CF1A/CF1A.cpp b/Codeforces/1/A/A.cpp
similarity index 100%
rename from Luogu/CF1A/CF1A.cpp
rename to Codeforces/1/A/A.cpp
diff --git a/Luogu/CF1041C/CF1041C.cpp b/Codeforces/1041/C/C.cpp
similarity index 100%
rename from Luogu/CF1041C/CF1041C.cpp
rename to Codeforces/1041/C/C.cpp
diff --git a/Luogu/CF1146A/CF1146A.cpp b/Codeforces/1146/A/A.cpp
similarity index 100%
rename from Luogu/CF1146A/CF1146A.cpp
rename to Codeforces/1146/A/A.cpp
diff --git a/Luogu/CF1154G/CF1154G.cpp b/Codeforces/1154/G/G.cpp
similarity index 100%
rename from Luogu/CF1154G/CF1154G.cpp
rename to Codeforces/1154/G/G.cpp
diff --git a/Luogu/CF1166E/CF1166E.cpp b/Codeforces/1166/E/E.cpp
similarity index 100%
rename from Luogu/CF1166E/CF1166E.cpp
rename to Codeforces/1166/E/E.cpp
diff --git a/Luogu/CF12A/CF12A.cpp b/Codeforces/12/A/A.cpp
similarity index 100%
rename from Luogu/CF12A/CF12A.cpp
rename to Codeforces/12/A/A.cpp
diff --git a/Luogu/CF1374A/CF1374A.cpp b/Codeforces/1374/A/A.cpp
similarity index 100%
rename from Luogu/CF1374A/CF1374A.cpp
rename to Codeforces/1374/A/A.cpp
diff --git a/Luogu/CF14A/CF14A.cpp b/Codeforces/14/A/A.cpp
similarity index 100%
rename from Luogu/CF14A/CF14A.cpp
rename to Codeforces/14/A/A.cpp
diff --git a/Luogu/CF1421A/CF1421A.cpp b/Codeforces/1421/A/A.cpp
similarity index 100%
rename from Luogu/CF1421A/CF1421A.cpp
rename to Codeforces/1421/A/A.cpp
diff --git a/Luogu/CF1445A/CF1445A.cpp b/Codeforces/1445/A/A.cpp
similarity index 100%
rename from Luogu/CF1445A/CF1445A.cpp
rename to Codeforces/1445/A/A.cpp
diff --git a/Luogu/CF1551A/CF1551A.cpp b/Codeforces/1551/A/A.cpp
similarity index 100%
rename from Luogu/CF1551A/CF1551A.cpp
rename to Codeforces/1551/A/A.cpp
diff --git a/Luogu/CF1553A/CF1553A.cpp b/Codeforces/1553/A/A.cpp
similarity index 100%
rename from Luogu/CF1553A/CF1553A.cpp
rename to Codeforces/1553/A/A.cpp
diff --git a/Luogu/CF1573A/CF1573A.cpp b/Codeforces/1573/A/A.cpp
similarity index 100%
rename from Luogu/CF1573A/CF1573A.cpp
rename to Codeforces/1573/A/A.cpp
diff --git a/Luogu/CF19B/CF19B.cpp b/Codeforces/19/B/B.cpp
similarity index 100%
rename from Luogu/CF19B/CF19B.cpp
rename to Codeforces/19/B/B.cpp
diff --git a/Luogu/CF2A/CF2A.cpp b/Codeforces/2/A/A.cpp
similarity index 100%
rename from Luogu/CF2A/CF2A.cpp
rename to Codeforces/2/A/A.cpp
diff --git a/Luogu/CF20A/CF20A.cpp b/Codeforces/20/A/A.cpp
similarity index 100%
rename from Luogu/CF20A/CF20A.cpp
rename to Codeforces/20/A/A.cpp
diff --git a/Luogu/CF25A/CF25A.cpp b/Codeforces/25/A/A.cpp
similarity index 100%
rename from Luogu/CF25A/CF25A.cpp
rename to Codeforces/25/A/A.cpp
diff --git a/Luogu/CF25B/CF25B.cpp b/Codeforces/25/B/B.cpp
similarity index 100%
rename from Luogu/CF25B/CF25B.cpp
rename to Codeforces/25/B/B.cpp
diff --git a/Luogu/CF27E/CF27E.cpp b/Codeforces/27/E/E.cpp
similarity index 100%
rename from Luogu/CF27E/CF27E.cpp
rename to Codeforces/27/E/E.cpp
diff --git a/Luogu/CF294B/CF294B.cpp b/Codeforces/294/B/B.cpp
similarity index 100%
rename from Luogu/CF294B/CF294B.cpp
rename to Codeforces/294/B/B.cpp
diff --git a/Luogu/CF383C/CF383C.cpp b/Codeforces/383/C/C.cpp
similarity index 100%
rename from Luogu/CF383C/CF383C.cpp
rename to Codeforces/383/C/C.cpp
diff --git a/Luogu/CF4A/CF4A.cpp b/Codeforces/4/A/A.cpp
similarity index 100%
rename from Luogu/CF4A/CF4A.cpp
rename to Codeforces/4/A/A.cpp
diff --git a/Luogu/CF438D/CF438D.cpp b/Codeforces/438/D/D.cpp
similarity index 100%
rename from Luogu/CF438D/CF438D.cpp
rename to Codeforces/438/D/D.cpp
diff --git a/Luogu/CF444C/CF444C.cpp b/Codeforces/444/C/C.cpp
similarity index 100%
rename from Luogu/CF444C/CF444C.cpp
rename to Codeforces/444/C/C.cpp
diff --git a/Luogu/CF47A/CF47A.cpp b/Codeforces/47/A/A.cpp
similarity index 100%
rename from Luogu/CF47A/CF47A.cpp
rename to Codeforces/47/A/A.cpp
diff --git a/Luogu/CF6A/CF6A.cpp b/Codeforces/6/A/A.cpp
similarity index 100%
rename from Luogu/CF6A/CF6A.cpp
rename to Codeforces/6/A/A.cpp
diff --git a/Luogu/CF617E/CF617E.cpp b/Codeforces/617/E/E.cpp
similarity index 100%
rename from Luogu/CF617E/CF617E.cpp
rename to Codeforces/617/E/E.cpp
diff --git a/Luogu/CF730I/CF730I.cpp b/Codeforces/730/I/I.cpp
similarity index 100%
rename from Luogu/CF730I/CF730I.cpp
rename to Codeforces/730/I/I.cpp
diff --git a/Luogu/CF845C/CF845C.cpp b/Codeforces/845/C/C.cpp
similarity index 100%
rename from Luogu/CF845C/CF845C.cpp
rename to Codeforces/845/C/C.cpp
diff --git a/Luogu/CF869C/CF869C.cpp b/Codeforces/869/C/C.cpp
similarity index 100%
rename from Luogu/CF869C/CF869C.cpp
rename to Codeforces/869/C/C.cpp
diff --git a/Luogu/CF9A/CF9A.cpp b/Codeforces/9/A/A.cpp
similarity index 100%
rename from Luogu/CF9A/CF9A.cpp
rename to Codeforces/9/A/A.cpp
diff --git a/Luogu/CF920F/CF920F.cpp b/Codeforces/920/F/F.cpp
similarity index 100%
rename from Luogu/CF920F/CF920F.cpp
rename to Codeforces/920/F/F.cpp
diff --git a/Luogu/CF1581A/CF1581A.cpp b/Luogu/CF1581A/CF1581A.cpp
deleted file mode 100644
index 5c33a7a1..00000000
--- a/Luogu/CF1581A/CF1581A.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include <bits/stdc++.h>
-
-using namespace std;
-
-const int mod = 1000000007;
-
-int t, inv[100005];
-long long n, ans;
-
-int main() {
-    cin >> t;
-    while (t--) {
-        ans = 1;
-        cin >> n;
-        n *= 2;
-        while (n) {
-            ans = ans * n-- % mod;
-        }
-        cout << ans * 500000004 % mod << endl;
-    }
-    return 0;
-}
diff --git a/Luogu/CF1598A/CF1598A.cpp b/Luogu/CF1598A/CF1598A.cpp
deleted file mode 100644
index e4e6c9cf..00000000
--- a/Luogu/CF1598A/CF1598A.cpp
+++ /dev/null
@@ -1,25 +0,0 @@
-#pragma GCC optimize("Ofast")
-
-#include <bits/stdc++.h>
-
-using namespace std;
-
-int t, n;
-string s[2];
-bool flag;
-
-int main() {
-    std::ios::sync_with_stdio(false);
-    cin >> t;
-    while (t--) {
-        flag = true;
-        cin >> n >> s[0] >> s[1];
-        for (int i = 0; i < n; i++) {
-            if (s[0][i] == '1' && s[1][i] == '1') {
-                flag = false;
-            }
-        }
-        cout << (flag ? "YES" : "NO") << endl;
-    }
-    return 0;
-}
diff --git a/Luogu/CF1598B/CF1598B.cpp b/Luogu/CF1598B/CF1598B.cpp
deleted file mode 100644
index dbee78b0..00000000
--- a/Luogu/CF1598B/CF1598B.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-#include <bits/stdc++.h>
-
-using namespace std;
-
-int t, n, cnt, l, r, a[1005][6];
-bool flag;
-
-int main() {
-    cin >> t;
-    while (t--) {
-        flag = false;
-        cin >> n;
-        for (int i = 1; i <= n; i++) {
-            for (int j = 1; j <= 5; j++) {
-                cin >> a[i][j];
-            }
-        }
-        for (int i = 1; i <= 5; i++) {
-            for (int j = i + 1; j <= 5; j++) {
-                cnt = l = r = 0;
-                for (int k = 1; k <= n; k++) {
-                    if (a[k][i] == 1 && a[k][j] == 1) {
-                        cnt++;
-                    } else {
-                        l += a[k][i];
-                        r += a[k][j];
-                    }
-                }
-                if (cnt + l + r == n && l <= n / 2 && r <= n / 2) {
-                    flag = true;
-                    break;
-                }
-            }
-        }
-        cout << (flag ? "Yes" : "No") << endl;
-    }
-    return 0;
-}
diff --git a/Luogu/CF1606A/CF1606A.cpp b/Luogu/CF1606A/CF1606A.cpp
deleted file mode 100644
index c0a9e4b0..00000000
--- a/Luogu/CF1606A/CF1606A.cpp
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <bits/stdc++.h>
-
-using namespace std;
-
-int t;
-string s;
-
-int main() {
-    cin >> t;
-    while (t--) {
-        cin >> s;
-        s[0] = *s.rbegin();
-        cout << s << endl;
-    }
-    return 0;
-}