백준 13172 Σ 혼내주기
#include #define fastio ios::sync_with_stdio(0), cin.tie(0) using namespace std; using ll = long long; const ll MOD = 1e9+7; int m; void input() { fastio; cin >> m; } ll inverse(ll b, int n) { ll ret = 1; while(n) { if(n&1) ret = ret * b % MOD; b = b * b % MOD; n >>= 1; } return ret; } ll fraction(ll a, ll b) { return a * inverse(b, MOD-2) % MOD; } int main() { input(); ll ans = 0; while(m--) { ..
혼내주기
2021. 7. 23. 10:59