제출 #821597

#제출 시각UTC-0아이디문제언어결과실행 시간메모리
8215972023-08-11 11:58:53mgl_diamond다리 (APIO19_bridges)C++17
13 / 100
3059 ms9824 KiB
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ii = pair<int, int>;
template<class T> using vec = vector<T>;
#define foru(i, l, r) for(int i=(l); i<=(r); ++i)
#define ford(i, l, r) for(int i=(l); i>=(r); --i)
#define fore(x, v) for(auto &x : v)
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define fi first
#define se second
#define file "input"
void setIO(string name="") {
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
if (fopen(file".in", "r")) {
freopen(file".in", "r", stdin);
freopen(file".out", "w", stdout);
}
}
const int N = 5e4+5;
struct Edge {
int u, v, w;
Edge(int _u=0, int _v=0, int _w=0) : u(_u), v(_v), w(_w) {}
};
 
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컴파일 시 표준 에러 (stderr) 메시지

bridges.cpp: In function 'void setIO(std::string)':
bridges.cpp:20:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     freopen(file".in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bridges.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen(file".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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