$\color{777777}{How}$

• itertools의 product를 사용함
  • 이거 꽤 유용한듯.
  • product

$\color{777777}{Code}$

import sys
from itertools import product

readline = sys.stdin.readline
write = sys.stdout.write

def solve():
    global N, M
    nums = [k for k in range(1, N + 1)]
    write("\\n".join(list(map(" ".join, product(map(str, nums), repeat=M)))))

N, M = map(int, readline().split())
solve()

• old

$\color{777777}{Time}$