#include 
using namespace std;

#define ll long long
ll ans = 0;

void solve(){
    
    cout << ans << "\n";
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int t, i=1;
    cin >> t;
    while(t--) {
        cout << "Case #" << i << ": ";
        solve();
        ++i;
    }
}