제출 #1235785

#제출 시각아이디문제언어결과실행 시간메모리
1235785namplh나머지들의 합 (NOI12_modsum)C++20
25 / 25
130 ms468 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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