| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1147178 | feyza | XOR Sum (info1cup17_xorsum) | C++20 | 1695 ms | 8008 KiB |
#include <bits/stdc++.h>
using namespace std;
void speed()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
}
const int maxn=1e6+6;
int n;
long long v[maxn],ans=0;
void read()
{
cin>>n;
for(int i=1;i<=n;i++)cin>>v[i];
for(int i=1;i<=n;i++)
{
for(int j=i;j<=n;j++)
ans^=(v[i]+v[j]);
}
cout<<ans<<endl;
}
int main()
{
speed();
read();
return 0;
}
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