#include<iostream> 
using namespace std;
int main()
{ int p,e,i,d;
cin>>p>>e>>i>>d;
int k[10000];
int j=0;
  while(p>=0&&p<365&&e>=0&&e<365&&i>=0&&i<365&&d>=0&&d<365&&p!=-1&&e!=-1&&i!=-1&&d!=-1)
  {
    int s=i;
    while(1)
    {
      s+=33;
      if((s-e)%28==0&&(s-p)%23==0)break;
    }
    k[j]=s-d;
    if(k[j]>21252)k[j]=k[j]%21252;
    j++;
    cin>>p>>e>>i>>d;
  }
  for(int h=0;h<j;h++)
  cout<<"Case "<<h+1<<": "<<"the next triple peak occurs in "<<k[h]<<" days."<<endl;
  return 0;
}