Submission #722735

#	Time	Username	Problem	Language	Result	Execution time	Memory
722735		AliHasanli	XOR Sum (info1cup17_xorsum)	C++17	0 / 100	228 ms	280 KiB

xorsum

#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=2*a;
        else ans^=(2*a);
    }
    cout<<ans;
    return 0;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23