#include <iostream>
using namespace std;
int main()
{ long p,e,i,d;
  long a;
  long number=1;
  while(cin>>p>>e>>i>>d){
	  if(p==-1 && e==-1 && i==-1 && d==-1) break;
	  for(a=1;;a++){
		  if((a-p)%23==0 && (a-e)%28==0 && (a-i)%33==0){
			  cout<<"Case "<<number<<": the next triple peak occurs in "<<a-d+1<<" days."<<endl;
			  number++;
		      break;
		  }
	  }
  }
  return 0;
}