#define _GNU_SOURCE
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/syscall.h>   /* For SYS_xxx definitions */
#include <errno.h>

static unsigned long long arcrandom_uniform_ll(unsigned long long upper_bound)
{
    unsigned long long r, mini;
    long ret;

    if (upper_bound < 2)
        return 0;

    mini = -upper_bound % upper_bound;

    for (;;) {
        do {
        /* <=256 byte requests always succeed */
            ret = syscall(__NR_getrandom, &r, sizeof(r), 0, 0, 0, 0);
        } while ((ret == -1) && (errno == EINTR));
        if (ret != sizeof(r)) _exit(1);

        if (r >= mini)
        break;
    }

    return r % upper_bound;
}

int main(int argc, char *argv[])
{
    unsigned long long up;
    unsigned long long nr;

    if (argc != 3) {
        return 1;
    } else {
        errno = 0;
        char *endptr = NULL;
        nr = strtoull(argv[1], &endptr, 10);
        if (errno != 0 || argv[1] == endptr) return 1;
        up = strtoull(argv[2], &endptr, 10);
        if (errno != 0 || argv[2] == endptr) return 1;
    }
    while (nr--) {
        printf("%llu\n", arcrandom_uniform_ll(up));
    }
    return 0;
}