제출 #722734

#제출 시각아이디문제언어결과실행 시간메모리
722734AliHasanliXOR Sum (info1cup17_xorsum)C++17
0 / 100
236 ms4872 KiB
#include <iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
    int ans=0;
    for(int i=0;i<n;i++)
    {
        int a;
        cin>>a;
        if(i==0)ans=a;
        else ans^=a;
    }
    cout<<ans*2;
    return 0;
}
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