#include <stdio.h>
int main (int argc, char **argv) {
int i;
        srand(time(NULL));
for (i=0;i<atoi(argv[1]);i++) printf("%c", 'a'+rand()%26);


char *tld[] = {
        ".net",
        ".org",
        ".com",
        ".us"
};

printf("%s\n", tld[rand() % 4]);
}