제출 #1182473

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1182473		Agageldi	September (APIO24_september)	C++20	0 / 100	60 ms	117828 KiB

september

#include "bits/stdc++.h"
#include "september.h"
// #include "stub.cpp"
using namespace std;

#define SZ(v) (int)v.size()
#define ll long long
#define MAX_N 5000005

ll n, vis[MAX_N], ans, ind[MAX_N], r = -1;
vector <int> v[MAX_N];

void solve(int x) {
	vis[x] = 1;
	r = max(r,ind[x]);
	for(auto i : v[x]) {
		solve(i);
		v[i].clear();
	}
}

int solve(int N, int M, vector<int> F, vector<vector<int>> S) {
	ans = 0;
	for(int i = 0; i < N; i++) {
		v[i].clear();
		vis[i] = 0;
	}
	for(int i = 1; i < N; i++) {
		v[F[i]].push_back(i);
	}
	for(int i = 0; i < SZ(S[0]); i++) {
		ind[S[0][i]] = i;
	}
	for(auto i : S[0]) {
		if(r == ind[i]) ans++;
		if(vis[i]) continue;
		solve(i);
		if(r == ind[i]) ans++;
	}
	return ans;
}

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• Subtask 2: 0 / 14
• Subtask 3: 0 / 5
• Subtask 4: 0 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 11
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• Subtask 10: 0 / 16