[백준] 11650 좌표 정렬하기 (파이썬)

import sys 
input = sys.stdin.readline

N = int(input())
coordinates = []

for _ in range(N):
    coordinates.append(list(map(int, input().split())))

coordinates.sort(key=lambda x: (x[0], x[1]))

for i in coordinates:
    print (*i)