제출 #1010223

#제출 시각아이디문제언어결과실행 시간메모리
1010223kyaruruCalvinball championship (CEOI15_teams)C++17
0 / 100
3 ms604 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const ll mod = 1000007; int main() { #ifndef ONLINE_JUDGE freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif ios_base::sync_with_stdio(0); cin.tie(0); int a; cin >> a; ll k[a + 1], ans = 0,now=1; for (int i = 1; i <= a; i++) cin >> k[i], k[i]--; for(int i=a; i>=1; i--){ ans=(ans+k[i]*now)%mod; now=now*i%mod; } cout<<ans; }

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In function 'int main()':
teams.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
teams.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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