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