> #include <iostream>
> 
> using namespace std;
> 
> int main()
> {
> 	int p, e, i, d;
> 	int m=0;
> 	while (cin >> p >> e >> i >> d)
> 	{
> 		++m;
> 		if (p==-1 && e==-1 && i==-1 && d==-1)
> 		{
> 			return 0;
> 		}
> 		int j=0, k;
> 		do
> 		{
> 			k = 23 * j+p;
> 			++j;
> 		} while ((k-e)%28 || (k-i)%33);
> 		j = k-d;
> 		if (j<=0) 
> 			j += 21252;
> 		cout << "Case " << m << ": the next triple peak occurs in " << j << " days." << endl;
> 	}
> 	return 0;
> }