#!/usr/bin/env python3
import random, string, sys

def gen_alias(domain: str, length: int = 10, count: int = 1) -> list[str]:
    aliases = []
    for _ in range(count):
        alias = ''.join(random.choices(string.ascii_lowercase + string.digits, k=length))
        aliases.append(f"{alias}@{domain}")
    return aliases

if __name__ == "__main__":
    domain = sys.argv[1] if len(sys.argv) > 1 else "zhangyunuo.net"
    count = int(sys.argv[2]) if len(sys.argv) > 2 else 10
    length = int(sys.argv[3]) if len(sys.argv) > 3 else 10
    for a in gen_alias(domain, length, count):
        print(a)