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