#include<stdio.h>
void main()
{
	int p,e,i,d,n,a=1;
	for(a;a>0;a++){
	scanf("%d%d%d%d",&p,&e,&i,&d);
	if(p!=-1&&e!=-1&&i!=-1&&d!=-1){
		for(n=p+23;;n+=23){
		if((n-e)%28==0)break;}
	for(n;;n+=23*28){
		if((n-i)%33==0)break;}
	while(n<=d){
		n+=23*28*32;}
	printf("Case %d: the next triple peak occurs in %d days.\n",a,n-d);}
	else a=-1;
	}
}