#include <stdio.h>

#define DEBUG 1

int power(int x, unsigned p);

int main(void)
{

#ifdef DEBUG
        printf("%d\n%d\n%d\n%d\n%d\n",
                power(2, 0),
                power(2, 1),
                power(2, 2),
                power(2, 10),
                power(-2, 9));
#endif
        int result = test();

        if(result == 0) printf("All tests passed!\n");
        else printf("Failed on test %d!\n");

        return 0;
}

int test(void)
{
        if (power(2, 0) != 1) return 1;
        if (power(2, 1) != 2) return 2;
        if (power(2, 2) != 4) return 3;
        if (power(2, 10) != 1024) return 4;
        if (power(-2, 9) != -512) return 5;

return 0;
}

int power(int x, unsigned p)
{
/* Put your code here */
}