Submission #1200709

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200709		aaatroush	September (APIO24_september)	C++20	Compilation error	0 ms	0 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;
	}*/
	ll mi = LLONG_MAX;
	for(ll i = 0; i<vol.size(); i++){
		vector<int> vec = vol[i];
	
		ll 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);
					}
				}
			}
		}
		mi = min(mi, ctr);
	}

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

Compilation message (stderr)

/usr/bin/ld: /tmp/cc0XmK4A.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc8rUNJM.o:september.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status