제출 #244501

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
244501		dwsc	Pipes (CEOI15_pipes)	C++14	10 / 100	1394 ms	23692 KiB

pipes

#include <bits/stdc++.h>
using namespace std;
int n,m;
vector<int> adj[30010];
int low[30010],num[30010],parent[30010];
int counter;
void articulationPoint(int u){
   // cout << u;
    low[u] = num[u] = counter++;
    for (int j = 0; j < adj[u].size(); j++){
        int v = adj[u][j];
        if (num[v] == -1){
            parent[v] = u;
            articulationPoint(v);
            if (low[v] > num[u]) cout << u << " " << v << "\n";
            low[u] = min(low[u],low[v]);
        }
        else if (v != parent[u]){
            low[u] = min(low[u],low[v]);
        }
    }
}

int main(){
    cin >> n >> m;
    for (int i = 0; i < m; i++){
        int a,b;
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    for (int i = 1; i <= n; i++){
        num[i] = -1;
    }
    for (int i = 1;i <= n; i++) if (num[i] == -1) articulationPoint(i);
}

컴파일 시 표준 에러 (stderr) 메시지

pipes.cpp: In function 'void articulationPoint(int)':
pipes.cpp:10:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 0; j < adj[u].size(); j++){
                     ~~^~~~~~~~~~~~~~~

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• Subtask 3: 10 / 10
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• Subtask 10: 0 / 10