CPP
cpp
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#include <iostream>
using namespace std;
int main() {
unsigned long long int i,j,N,c=0;
cin>>N;
unsigned long long int a[N];
for(i=0;i<N;i++) {
cin>>a[i];
}
for(i=0;i<N-1;i++) {
for(j=i+1;j<N;j++) {
if((a[i]^a[j])%2==0) {
if((a[i]^a[j])>=4)
c++;
}
}
}
cout<<c<<"\n";
return 0;
}
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OUTPUT
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