#include <stdio.h>

int main() {
    int p = 0, e = 0, i = 0, d = 0, c = 0;
    while (1) {
        scanf("%d %d %d %d", &p, &e, &i, &d);
        if (p == -1) break; c++;
        p %= 23; e %= 28; i %= 33;
        int t = 0;
        while (1) {
            int len = t++ * 23 + p;
            if (len <= d) continue;
            if ((len - e)%28 == 0 && (len - i)%33 == 0) {
                printf("Case %d: the next triple peak occurs in %d days.\n", c, len - d);
                break;
            }
        }
    }
    return 0;
}