UVA 13090

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
int main()
{
   ios_base::sync_with_stdio(0);
   cin.tie(0);cout.tie(0);


   test

   {

        ll n,m,i,j,k,l;

        cin>>n>>m;

        l=(n-1)/m;

        cout<<"Case "<<cs<<": "<<l<<endl;


   }


   return 0;
}