#include <iostream>
using namespace std;
int rev(int n)
{
int m=0;
while(n!=0)
{
m=m*10+(n%10);
n=n/10;
}
return m;
}
int main()
{
int t;
cin>>t;
while(t!=0)
{
int a,b;
cin>>a>>b;
int ans=0;
ans=rev(a)+rev(b);
cout<<ans<<endl;
t--;
}
}
using namespace std;
int rev(int n)
{
int m=0;
while(n!=0)
{
m=m*10+(n%10);
n=n/10;
}
return m;
}
int main()
{
int t;
cin>>t;
while(t!=0)
{
int a,b;
cin>>a>>b;
int ans=0;
ans=rev(a)+rev(b);
cout<<ans<<endl;
t--;
}
}