제출 #480205

#제출 시각아이디문제언어결과실행 시간메모리
480205mohamedsobhi777PIN (CEOI10_pin)C++14
0 / 100
6 ms6640 KiB
#include <bits/stdc++.h> using namespace std; const int N = 2e5 + 7; int n, d; long long ans ; string st[N] ; int main() { ios_base::sync_with_stdio(0); cin.tie(0); #ifndef ONLINE_JUDGE freopen("in.in", "r", stdin); #endif cin >> n >> d ; for(int i = 0 ;i < n; ++ i){ cin >> st[i] ; } for(int i = 0 ;i < n; ++ i ){ for(int j = 0 ;j < i ; ++ j){ int diff = 0 ; for(int k = 0 ; k < 4 ; ++ k){ diff += (st[i][k] != st[j][k]) ; } ans += (diff == d) ; } } cout << ans ; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

pin.cpp: In function 'int main()':
pin.cpp:15:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |        freopen("in.in", "r", stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
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