# coding:utf-8

import asyncio


async def factorial(name, number):
 f = 1
 for i in range(2, number + 1):
 print(f"Task {name}: Compute factorial({i})...")
 await asyncio.sleep(1)
 f *= i
 print(f"Task {name}: factorial({number}) = {f}")


async def main():
 await asyncio.gather(
 factorial("A", 2),
 factorial("B", 3),
 factorial("C", 4),
 )


asyncio.run(main())