[Python] 백준 #11723 - 집합

문제

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https://www.acmicpc.net/problem/11723

11723번: 집합

 

 

 

풀이

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import sys
n = int(input())

s = set()

for _ in range(n):
    arr = sys.stdin.readline().strip().split()
    if arr[0] == 'add':
        s.add(int(arr[1]))
    elif arr[0] == 'remove':
        try:
            s.remove(int(arr[1]))
        except:
            pass
    elif arr[0] == 'check':
        if int(arr[1]) in s: print(1)
        else: print(0)
    elif arr[0] == 'toggle':
        if int(arr[1]) in s: s.remove(int(arr[1]))
        else: s.add(int(arr[1]))
    elif arr[0] == 'all':
        s = {i for i in range(1,21)}
    else:
        s = set()