1635A Min Or Sum codeforces solution in cpp
by ujjal roy
#include<bits/stdc++.h>
using namespace std;
main()
{
long long int t ,n,i;
cin>>t;
while(t--)
{
cin>>n;
long long int a[n],sum=0;
for(i=0;i<n;i++)
{
cin>>a[i];
sum|=a[i];
}
cout<<sum<<endl;
}
return 0;
}
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