#include<iostream>
#include<cmath>
#include<cstdio>
using namespace std;
 
int main()
{
    long tst,i,l,c;
    cin>>tst;
 
    for(c=1;c<=tst;c++)
    {
        cin>>i>>l;
        long tym=(abs(i-l)*4)+(i*4)+19;
        printf("Case %ld: %ld\n",c,tym);
    }
    return 0;
}