제출 #636042

#제출 시각아이디문제언어결과실행 시간메모리
636042SofiatpcLogičari (COCI21_logicari)C++14
10 / 110
68 ms1436 KiB
#include <bits/stdc++.h>

using namespace std;

int main()
{
    int N; cin>>N;
    for(int i = 1; i <= N; i++)
    {
        int a, b; cin>>a>>b;
    }
    if(N%4==0)cout<<N/2<<"\n";
    else cout<<"-1\n";
}
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