Ultra-Fast-Mathematicians (How to add the beginning zero to the result)

#1

#include
using namespace std;

int main() {
int t; cin>>t;
while(t–)
{
int n1, n2;
cin >> n1 >> n2;
int n3 = n1^ n2;
cout << n3 << endl;
}
return 0;
}

#2

hey @meg.2198, why do you want to add zero to beginning.

You approach in not correct here. Input is in binary form and you need to calculate x-or by processing each bit. But here you are the number in decimal form.

#3

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