제출 #566689

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
566689	2022-05-22 16:25:05	two_sides	Alternating Current (BOI18_alternating)	C++17	13 / 100	21 ms	11288 KiB

alternating

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#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
int cnt[N], l[N], r[N], n, m;
vector<pair<int, int>> adj[N];
vector<int> path;
bool vis[N];
bool dfs(int u) {
    if (u == n) return 1;
    if (vis[u]) return 0;
    vis[u] = 1;
    for (auto e : adj[u]) {
        int v, i; tie(v, i) = e;
        path.push_back(i);
        if (dfs(v)) return 1;
        path.pop_back();
    }
    return 0;
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> m;
    for (int i = 1; i <= m; i++)
        cin >> l[i] >> r[i];
    {
 
 
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