#include<bits/stdc++.h>
using namespace std;
int main(){
int t,i,x,d2,m2,y2,d1,m1,y1;
cin>>t;
for(i=1; i<=t; i++){
scanf("%d/%d/%d",&d2,&m2,&y2);
scanf("%d/%d/%d",&d1,&m1,&y1);
cout<<"Case #"<<i<<": ";
x=(y2-y1)-(m2<m1)-(m2==m1 && d2<d1);
if(x<0) cout<<"Invalid birth date"<<endl;
else if(x>130) cout<<"Check birth date"<<endl;
else cout<<x<<endl;
}
}