#include<iostream>
#include<string>
using namespace std;
int main()
{
int T ;
cin>>T;
string a[20],b[20],sum[20];
for(int i=1;i<=T;i++)
{ cin>>a[i]>>b[i]; sum[i]=a[i]+b[i]; }
for (i=1;i<=T;i++)
{ cout<<"Case "<<i<<endl;
cout<<a[i]<<"+"<<b[i]<<"="<<sum[i];
cout<<endl; }
return 0;}
