Submission #647674

#	Time	Username	Problem	Language	Result	Execution time	Memory
647674		GudStonks	Logičari (COCI21_logicari)	C++17	10 / 110	76 ms	6892 KiB

Main

#include<bits/stdc++.h>
using namespace std;
int n;
vector<int>g[100005];
void fun()
{
	cin>>n;
	for(int i = 1, a, b; i <= n; i++)
	{
		cin>>a>>b;
		g[a].push_back(b);
		g[b].push_back(a);
	}
	cout<<((n % 4 == 0) ? n / 2 : -1);
}

int main()
{
	int ttt = 1;
	//cin>>ttt;
	while(ttt--)
		fun();
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 40
• Subtask 4: 0 / 50