Submission #498881

#	Time	Username	Problem	Language	Result	Execution time	Memory
498881		ahmedfouadnew	XOR Sum (info1cup17_xorsum)	C++17	7 / 100	1661 ms	656 KiB

xorsum

//#pragma GCC optimize ("O3")
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
int n;
int a[100005];
signed main()
{
    cin>>n;
    for(int i=0;i<n;i++)
        cin>>a[i];
    int ans=0;
    for(int i=0;i<n;i++)
    {
        for(int j=i;j<n;j++)
        {
            ans^=(a[i]+a[j]);
        }
    }
    cout<<ans<<endl;
}

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