Submission #1121409

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121409		ezzzay	September (APIO24_september)	C++17	0 / 100	7 ms	7524 KiB

september

#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
const int MN=3e5+5;
vector<int>v[MN];
bool vis[MN];
int par[MN];
void dfs(int a){
	vis[a]=1;
	for(auto b:v[a]){
		if(vis[b]==1)continue;
		dfs(b);
	}
}

int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
	for(int i=0;i<N;i++){
		v[i].clear();
		vis[i]=0;
	}
	for(int i=1;i<N;i++){
		par[i]=F[i];
		v[F[i]].pb(i);
	}
	int k=0;
	for(auto a:S[0]){
		if(vis[a]==0){
			k++;
			dfs(a);
		}
	}
	return k;
	
	
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 5
• Subtask 4: 0 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 11
• Subtask 7: 0 / 9
• Subtask 8: 0 / 11
• Subtask 9: 0 / 9
• Subtask 10: 0 / 16