제출 #673736

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
673736		meoww	Traffic (CEOI11_tra)	C++14	32 / 100	56 ms	1236 KiB

tra

#include "bits/stdc++.h"
using namespace std;
const int N=7000;
int n,m,a,b,cnt;
bool vis[N];
pair<int,int> jun[N];
vector<int> v[N];
void dfs(int i) {
  vis[i]=true;
  if (jun[i].first==a) cnt++;
  for (int j:v[i]) {
    if (!vis[j]) dfs(j);
  }
}
signed main() {
    cin>>n>>m>>a>>b;
    for (int i=1;i<=n;i++) {
      cin>>jun[i].first>>jun[i].second;
    }
    for (int i=0;i<m;i++) {
      int c,d,e; cin>>c>>d>>e;
      v[c].push_back(d);
      if (e==2) v[d].push_back(c);
    }
    vector<pair<int,int> > wst;
    for (int i=1;i<=n;i++) {
      if (jun[i].first==0) wst.push_back({jun[i].second,i});
    }
    sort(wst.rbegin(),wst.rend());
    vector<int> ans;
    for (int i=0;i<wst.size();i++) {
      cnt=0;
      for (int j=1;j<=n;j++) vis[j]=false;
      dfs(wst[i].second);
      ans.push_back(cnt);
    }
    for (int i:ans) cout<<i<<endl;
}

컴파일 시 표준 에러 (stderr) 메시지

tra.cpp: In function 'int main()':
tra.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for (int i=0;i<wst.size();i++) {
      |                  ~^~~~~~~~~~~

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