#include <stdio.h>
#include <unistd.h>

int process_fork(int n) {
    int i;
    for (i = 1; i <= n; i++)
        if (fork() == 0)
            return i;
    return 0;
}

int main() {
    int id;
    id = process_fork(2);
    printf("Hello: %d\n", getpid());
    id = process_fork(2);
    printf("Hello: %d\n", getpid());
    return 0;
}