#include <stdio.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

int main(int argc, char **argv) {
    int file = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC, 0600);
    unsigned short val;
    unsigned char buf[sizeof(val)];
    while (scanf("%hu", &val) == 1) {
        buf[0] = val >> CHAR_BIT;
        buf[1] = val;
        write(file, buf, sizeof(buf));
    }
    close(file);
}