Submission #797313

#TimeUsernameProblemLanguageResultExecution timeMemory
797313tlnk07Logičari (COCI21_logicari)C++17
10 / 110
1 ms340 KiB
#include<bits/stdc++.h>
using namespace std;

long long n;

int main()
{
	cin >> n;
	if(n % 4 == 0)	cout << n / 2;
	else	cout << -1;
}
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