Submission #1200530

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200530		aaatroush	September (APIO24_september)	C++20	45 / 100	144 ms	7900 KiB

september

#include "september.h"
#include <bits/stdc++.h>
#define ll long long
#define ull long long
#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
#define MOD 1000000007
#define FAST ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;

int solve(int n, int m, vector<int> F, vector<vector<int>> vol) {
	vector<vector<ll>> adj(n);
	for(ll i = 1; i<F.size(); i++){
		adj[F[i]].pb(i);
	}
	/*for(ll i = 0; i<n; i++){
		cout<<i<<": ";
		for(auto &child:adj[i]){
			cout<<child<<" ";
		}
		cout<<endl;
	}*/
	vector<int> vec = vol[0];

	int ctr = 0;

	set<int> removal;

	vector<bool> visited(n, 0);

	for(int i = 0; i <vec.size(); i++){
		if(removal.empty()){
			ctr++;
		}
		removal.erase(vec[i]);
		queue<ll> bfs;
		bfs.push(vec[i]);
		visited[vec[i]] = 1;

		while(!bfs.empty()){
			ll parent = bfs.front();
			visited[parent] = 1;
			bfs.pop();
			for(auto &child:adj[parent]){
				if(!visited[child]){
					bfs.push(child);
					removal.insert(child);
				}
			}
		}

		
	}

	return ctr;
}
/*int main(){
	cout<<solve(3, 1, {-1,0,0}, {{1, 2}});
}*/

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