#include<iostream>
using namespace std;
int main()
{
	int i,p,e,d,w,ci=1;
	cin>>p>>e>>i>>d;
	
		while(p!=-1)
		{
			p%=23;
			e%=28;
			i%=33;
			w=(5544*p+14421*e+1288*i)%21252;
			if(w<=d)
				w+=(21252-d);
			else
				w-=d;
			printf("Case %d: the next triple peak occurs in %d days.\n",ci++,w);

cin>>p>>e>>i>>d;
	
	}
		return 0;
}