code. compile. run. debug. share.
Source Code
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/******************************************************************************
Online C++ Compiler.
Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.
*******************************************************************************/
#include<bits/stdc++.h>
using namespace std;
int main() {
int n;
cin>>n;
while(n--){
string a,c;
cin>>a>>c;
for(int i=0;i<c.length();i++)
{
if(a[i]==c[i])
cout<<"0";
else
cout<<"1";
}
}
return 0;
}
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