/*
很有意思的一道题
小心被骗哟。。。 
*/
#define LOCAL
#include<iostream>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<cstdlib>
#include<iomanip>
#include<string>
#include<algorithm>
#include<ctime>
#include<stack>
#include<queue>
#include<vector>
using namespace std;
int main()
{
#ifdef LOCAL
       freopen("input.txt","r",stdin);
       freopen("output.txt","w",stdout);
#endif
 
        string str;int sum,ncase,len,i,cases=1;
        cin>>ncase;
        while(ncase--)
        {
              cout<<"Case "<<cases++<<": "; 
              cin>>str;
              len=str.size();
              sum=0;
              for(i=0;i<len;i++)
                sum+=str[i]-'0';
              cin>>str;
              len=str.size();
              for(i=0;i<len;i++)
                sum+=str[i]-'0';
              cout<<sum<<endl;
        }
        return 0;
}