#include"stdio.h"
int main()
{    int p, e, i, d, m=0;
  
  while(  scanf("%d %d %d %d",&p, &e, &i, &d) && ( (p+1) ||(e+1) ||(i+1) ||(d+1) ) )
  {
    int t,j;	

	if(d<0||d>364)
	   break;

	   m++;	
	
	p%=23;  e%=28;  i%=33; 
	
	for(j=1;j<=21252;j++)
     {
	  if( (j%23==p) && (j%28==e) && (j%33==i) )
   		 {  if(j<=d)  {j++; continue;}
		    else  {t=j-d;   break;}
         }
	   
	   if(j==21252)
         t=21252;
     }
   
   printf("Case %d: the next triple peak occurs in %d days.\n",m,t);
   
   }



  return 0;
}