| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1235785 | namplh | 나머지들의 합 (NOI12_modsum) | C++20 | 130 ms | 468 KiB |
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 1005;
int n, k = 0;
pair<int, int> a[N];
void btr(int i, int s) {
if (i > n) {
k += (s * s * s * s + 2 * s * s) % 5 + 1;
//cout << s << ' ' << (s * s * s * s + 2 * s * s) % 5 + 1 << '\n';
return;
}
for (int j = a[i].first; j <= a[i].second; j++) {
btr(i + 1, (s + j)%5);
}
}
signed main() {
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i].first >> a[i].second;
btr(1, 0);
cout << k;
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