제출 #473050

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
473050	2021-09-14 21:09:20	robell	학교 설립 (IZhO13_school)	C++17	100 / 100	133 ms	11972 KiB

school

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#pragma GCC optimize("O2")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
#define pb push_back
#define eb emplace_back
#define countbits __builtin_popcount
#define beg0 __builtin_clz
#define terminal0 __builtin_ctz
#define mod 1e9+7
void setIO(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}
void setIO(string f){
  freopen((f+".in").c_str(),"r",stdin);
  freopen((f+".out").c_str(),"w",stdout);
  setIO();
}
int N, M, S;
pair<ll,ll> V[300000];
int main(){
  setIO();
  cin >> N >> M >> S;
    for(int i=0;i<N;i++) {
        cin >> V[i].first >> V[i].second;
    }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

school.cpp: In function 'void setIO(std::string)':
school.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen((f+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:20:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  freopen((f+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100