#include <stdio.h>

int main(void) {
    int n_knocks;
    printf("how many knocks?\n");
    scanf("%d", &n_knocks);

    for (int i = 0; i < n_knocks; ++i) {
        printf("Knock, knock, knock - Penny?\n");
    }

    int n_actual_knocks;
    printf("and how many actual knocks?\n");
    scanf("%d", &n_actual_knocks);

    for (int i = 0; i < n_knocks; ++i) {
        for (int j = 0; j < n_actual_knocks; ++j) {
            if (j == 0) {
                printf("Knock");
            } else {
                printf(", knock");
            }
        }
        if (n_actual_knocks != 0) {
            printf(" - ");
        }
        printf("Penny.\n");
    }

    return 0;
}