📖 문제 📃 코드 import sys import collections input = sys.stdin.readline N, M = map(int, input().split()) strHash = collections.defaultdict(int) cnt = 0 for _ in range(N): s = input().strip() strHash[s] for _ in range(M): s = input().strip() if s in strHash: cnt += 1 print(cnt) 🔗 링크 https://www.acmicpc.net/problem/14425 14425번: 문자열 집합 첫째 줄에 문자열의 개수 N과 M (1 ≤ N ≤ 10,000, 1 ≤ M ≤ 10,000)이 주어진다. 다음 N개의 줄..

📖 문제 📃 코드 import collections # id_list = ["muzi", "frodo", "apeach", "neo"] # report = ["muzi frodo", "apeach frodo", "frodo neo", "muzi neo", "apeach muzi"] # k = 2 def solution(id_list, report, k): answer = [] # remove repeated report report = list(set(report)) # prevent duplicated reported user name reportHash = collections.defaultdict(set) # counting how many reported user stopped = collecti..