#include<stdio.h>
int main()
{
	int p, e, i, d, j, no = 1;
	scanf( "%d%d%d%d", &p, &e, &i, &d );
	while( p != -1 && e != -1 && i != -1 && d != -1 )
	{
		for( j = d + 1; j < 21252; j++ )
			if( ( j - p ) % 23 == 0 )
				break;
				for( ; j < 21252; j = j + 23 )
			if( ( j - e ) % 28 == 0)
				break;

		for( ; j < 21252; j = j + 23 * 28 )
			if( ( j - i ) % 33 == 0 )
				break;
				printf( "Case %d", no );
		printf( ": the next triple peak occurs in %d days.\n", j - d );
		scanf( "%d%d%d%d", &p, &e, &i, &d );
		no++;
	}
	return 0;
}