[BOJ]#11723. 집합/실버5/30min

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

Author: zaqquum

Hongjoo/백준/집합.py

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+"""
+[BOJ]#11723. 집합 / 실버5 / 비트마스킹
+문제 : https://www.acmicpc.net/problem/11723
+# PROBLEM
+add x / remove x / check x . toggle x / 
+all , empty 
+"""
+import sys
+input = sys.stdin.readline
+# answer = []
+M = int(input())
+s = [ 0 for _ in range(21)] # 1<=x <=20 숫자 제한 존재함
+for _ in range(M) :
+    operations = list(input().split())
+    # 1. empty, all 
+    if len(operations) <2 : 
+        if operations[0] == "all" :
+            s = [1 for _ in range(21)]
+        elif operations[0] == "empty" :
+            s = [0 for _ in range(21)]
+    # 2. add, remove , check , toggle
+    else :
+        ops , x = operations
+        if ops == "add" :
+            s[int(x)] = s[int(x)] | 1 
+        elif ops == "remove" :
+            s[int(x)] = s[int(x)] & 0 
+        elif ops == "check" :
+            print(s[int(x)])
+            # answer.append(s[int(x)])
+        elif ops == "toggle" : # NAND - 같으면 0 , 다르면 1
+            s[int(x)] = s[int(x)]^1
+    
+# #3. 결과 출력
+# for a in answer:
+#     print(a)