#include <stdio.h>
void main()
{int p,e,i,d,j,n=1;
 while(scanf("%d%d%d%d",&p,&e,&i,&d)!=EOF)
 { if(p==-1&&e==-1&&i==-1&&d==-1)break;
   p%=23;e%=28;i%=33;
   for(j=d;j<21252;j++)
   {
    if((j-p)%23==0&&(j-e)%28==0&&(j-i)%33==0)break;
   }
   
   j-=d; 
   if(j==0)j=21252;
   printf("Case %d: the next triple peak occurs in %d days.\n",n,j);
   n++;
 }
}