[Python] 백준 #7785. 회사에 있는 사람

https://www.acmicpc.net/problem/7785

7785번: 회사에 있는 사람

 

# 7785 - Python 3

import sys

input = sys.stdin.readline

k = int(input())
name_dict = dict()                      

for _ in range(k):
    name, working = input().split()

    if working == "enter":
        name_dict[name] = 1
    elif working == "leave":
        name_dict[name] = 0

name_list = sorted(name_dict.items(), key = lambda x : x[0], reverse = True)

for name, working in name_list:
    if working:
        print(name)