제출 #701587

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
701587		PCTprobability	Roads (CEOI20_roads)	C++17	0 / 100	4 ms	520 KiB

roads

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll mod = 1000000007;
#define fi first
#define se second
#define pb push_back
#define sor(a) sort(a.begin(),a.end())
int main(){
  ll n;
  cin>>n;
  map<ll,vector<pair<ll,ll>>> m;
  for(int i=0;i<n;i++){
    ll a,b,c,d;
    cin>>a>>b>>c>>d;
    m[a].pb({b,d});
  }
  vector<pair<ll,vector<pair<ll,ll>>>> d;
  for(auto e:m){
    sor(e.se);
    d.pb({e.fi,e.se});
    for(int i=0;i+1<e.se.size();i++){
      cout<<e.fi<<" "<<e.se[i].se<<" "<<e.fi<<" "<<e.se[i+1].fi<<endl;
    }
  }
  sor(d);
  for(int i=0;i+1<d.size();i++){
    cout<<d[i].fi<<" "<<d[i].se.back().se<<" "<<d[i+1].fi<<" "<<d[i+1].se[0].fi<<endl;
  }
}

컴파일 시 표준 에러 (stderr) 메시지

roads.cpp: In function 'int main()':
roads.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i=0;i+1<e.se.size();i++){
      |                 ~~~^~~~~~~~~~~~
roads.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::vector<std::pair<long long int, long long int> > > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   for(int i=0;i+1<d.size();i++){
      |               ~~~^~~~~~~~~

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