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第三届“图灵杯”趣味网络邀请赛 (初级)

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Baoshuo Ren 2021-08-08 16:34:53 +08:00 committed by Baoshuo Ren
parent 42f16ec07f
commit 66dedd2b6f
Signed by: baoshuo
GPG Key ID: 70F90A673FB1AB68
4 changed files with 146 additions and 0 deletions
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44
XJOI/contest/21novice/A/A.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int n;
string ans[15][10];
int main() {
cin >> n;
ans[1][1] = "+ +\n +\n+ +\n";
ans[2][1] = "+ +\n + +\n +\n + +\n+ +\n";
ans[3][1] = "+ +\n + +\n + +\n +\n + +\n + +\n+ +\n";
ans[4][1] = "+ +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n+ +\n";
ans[5][1] = "+ +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n+ +\n";
ans[6][1] = "+ +\n + +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n + +\n+ +\n";
ans[7][1] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n + +\n + +\n+ +\n";
ans[8][1] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n+ +\n";
ans[9][1] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n+ +\n";
ans[10][1] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n+ +\n";
ans[1][2] = "+ +\n +\n +\n";
ans[2][2] = "+ +\n + +\n +\n +\n +\n";
ans[3][2] = "+ +\n + +\n + +\n +\n +\n +\n +\n";
ans[4][2] = "+ +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n";
ans[5][2] = "+ +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n";
ans[6][2] = "+ +\n + +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n +\n";
ans[7][2] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n +\n +\n";
ans[8][2] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n";
ans[9][2] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n";
ans[10][2] = "+ +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n + +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n +\n";
ans[1][3] = "++ \n+ +\n++\n";
ans[2][3] = "++++\n+ +\n+ +\n+ +\n++++\n";
ans[3][3] = "++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++\n";
ans[4][3] = "++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++\n";
ans[5][3] = "++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++\n";
ans[6][3] = "++++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++++\n";
ans[7][3] = "++++++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++++++\n";
ans[8][3] = "++++++++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++++++++\n";
ans[9][3] = "++++++++++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++++++++++\n";
ans[10][3] = "++++++++++++++++++++\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n+ +\n++++++++++++++++++++\n";
cout << ans[n][1] << endl
<< ans[n][2] << endl
<< ans[n][3] << endl;
return 0;
}

24
XJOI/contest/21novice/B/B.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int n, m, lx, ly, rx, ry;
pair<int, int> point[1005];
int main() {
cin >> n >> m;
for (int i = 0; i < n; i++) {
cin >> point[i].first >> point[i].second;
}
for (int i = 0; i < m; i++) {
cin >> lx >> ly >> rx >> ry;
for (int i = 0; i < n; i++) {
if (lx <= point[i].first && point[i].first <= rx && ly <= point[i].second && point[i].second <= ry) {
cout << "Yes" << endl;
exit(0);
}
}
}
cout << "No" << endl;
return 0;
}

26
XJOI/contest/21novice/C/C.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int n, p;
string s;
stack<pair<char, int>> st;
int main() {
cin >> n >> p >> s;
s = ' ' + s;
for (int i = 1; i < s.size(); i++) {
if (s[i] == '{') {
st.push(make_pair(s[i], i));
} else if (st.top().second == p) {
cout << i << endl;
exit(0);
} else if (i == p) {
cout << st.top().second << endl;
exit(0);
} else {
st.pop();
}
}
return 0;
}

52
XJOI/contest/21novice/D/D.cpp Normal file
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#include <bits/stdc++.h>
using namespace std;
int t, a, cnt, prime[100005];
bool flag, is_prime[1000005];
int eratosthenes(int n) {
int p = 0;
for (int i = 0; i <= n; i++) is_prime[i] = 1;
is_prime[0] = is_prime[1] = 0;
for (int i = 2; i <= n; i++) {
if (is_prime[i]) {
prime[p++] = i;
if (1ll * i * i <= n) {
for (int j = i * i; j <= n; j += i) {
is_prime[j] = 0;
}
}
}
}
return p;
}
long long binpow(long long a, long long b, long long m) {
a %= m;
long long res = 1;
while (b > 0) {
if (b & 1) res = res * a % m;
a = a * a % m;
b >>= 1;
}
return res;
}
int main() {
cin >> t;
cnt = eratosthenes(1000000);
while (t--) {
flag = false;
cin >> a;
for (int i = 0; i < cnt; i++) {
if (binpow(a, prime[i], 10) % 10 == binpow(prime[i], a, 10) % 10) {
cout << prime[i] << endl;
flag = true;
break;
}
}
if (!flag) cout << -1 << endl;
}
return 0;
}