제출 #720447

#제출 시각아이디문제언어결과실행 시간메모리
720447stevancv철인 이종 경기 (APIO18_duathlon)C++14
0 / 100
46 ms9092 KiB
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e5 + 2;
const int inf = 1e9;
vector<int> g[N];
int was[N];
void Dfs(int s) {
    was[s] = 1;
    for (int u : g[s]) {
        if (was[u] == 0) Dfs(u);
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    Dfs(1);
    for (int i = 1; i <= n; i++) assert(was[i] == 1);
    return 0;
}
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