제출 #382343

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
382343	2021-03-27 06:40:17	ParsaAlizadeh	Parachute rings (IOI12_rings)	C++17	55 / 100	4067 ms	73152 KiB

rings

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#include <bits/stdc++.h>
using namespace std;
typedef long long       ll;
typedef pair<ll, ll>    pll;
typedef pair<int, int>  pii;
#define all(x)          x.begin(), x.end()
#define kill(x)         return cout << x << endl, 0
#define X               first
#define Y               second
#define endl            '\n'
constexpr ll pw(ll a, ll b, ll mod) {
    return (!b    ? 1 :
            b & 1 ? a * pw(a * a % mod, b / 2, mod) % mod :
                    pw(a * a % mod, b / 2, mod));
}
constexpr int N   = 1e6 + 10;
int n, mark[N], par[N], edg[N], sz[N];
vector<int> adj[N];
bool critDFS(int u) {
    int d = 0;
    bool flag = true;
    mark[u] = 1;
    for (int v : adj[u]) if (mark[v] < 3) {
        d++;
 
 
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