제출 #773942

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
773942	2023-07-05 09:47:44	ParsaS	Sumtree (INOI20_sumtree)	C++17	50 / 100	3068 ms	62668 KiB

Main

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// In the name of God
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
typedef long long ll;
const int N = 1e6 + 5, MOD = 1e9 + 7;
int n, r;
int fact[N], inv[N], f[N], c[N];
int val[N], par[N];
vector<int> adj[N];
int ans, bad;
int binpow(int a, int b) {
    return b ? 1LL * binpow(1LL * a * a % MOD, b / 2) * (b % 2 ? a : 1) % MOD : 1;
}
int C(int a, int b) {
    return a >= 0 && a <= b ? 1LL * fact[b] * inv[a] % MOD * inv[b - a] % MOD : 0;
}
void dfs(int v, int p) {
    c[v] = 1;
    par[v] = p;
    for (auto u : adj[v]) {
        if (u != p) {
            dfs(u, v);
            c[v] += c[u];
        }
    }
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 20 / 20
• Subtask 5: 0 / 30