제출 #875907

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
875907		ElenaBM	Traffic (CEOI11_tra)	C++17	32 / 100	5066 ms	36412 KiB

tra

#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
int cont, a, n, m, b;
vector<pair<int,int>>junct;
vector<vector<int>>adj;
void dfs(int nodo, vector<bool>&vis){
    //cout<< nodo << ' '<< junct[nodo].y<< '\n';
    vis[nodo] = true;
    if (junct[nodo].x == a) {
        //cerr<< junct[nodo].y;
        cont++;
    }
    for (int i = 0; i < (int)adj[nodo].size(); ++i){
        if (!vis[adj[nodo][i]]){
            //cerr<< "HI\n";
            dfs(adj[nodo][i], vis);
        }
    }
    return;
}
 
int main()
{
    cin>> n>> m>> a>> b;
    junct.resize(n);
    adj.resize(n);
    vector<pair<int,int>>w;
    for (int i = 0; i < n; ++i){
        cin>> junct[i].x >> junct[i].y;
        if (junct[i].x == 0)w.push_back({junct[i].y, i});
    }
    for (int i = 0; i < m; ++i){
        int s, d, f;
        cin>> s>> d>> f;
        s--;d--;
        adj[s].push_back(d);
        if (f== 2) adj[d].push_back(s);
    }
    sort(w.begin(), w.end(), greater());
    int ans;
    for (int i = 0; i < (int) w.size(); ++i){
        cont= 0;
        vector<bool>vis(n, false);
        dfs(w[i].y,vis);
        cout<< cont << '\n';
    }
 
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

tra.cpp: In function 'int main()':
tra.cpp:42:9: warning: unused variable 'ans' [-Wunused-variable]
   42 |     int ans;
      |         ^~~

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