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