[백준] 11651번 좌표 정렬하기 2 (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[1], x[0]))
for i in coordinates:
    print (*i)