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

int main(void) {

    clock_t c = clock();
    write(1, "Hello. I'm childish.\n",21);
    printf("time = %ld\n",c);

    clock_t d = clock();
    write(1, "Hello. I'm childish.\n",21);
    printf("time = %ld\n",d);

    clock_t e = clock();
    write(1, "Hello. I'm childish.\n",21);
    printf("time = %ld\n",e);

    return 0;

}