1.py

//프로그래머스 신고결과 받기 문제

def solution(id_list, report, k):
    reportHash = {}
    resultHash = {}

    for r in report:
        user, bad = r.split()
        if user not in reportHash:
            reportHash[user] = set()
        reportHash[user].add(bad)

        if bad not in resultHash:
            resultHash[bad] = set()
            resultHash[bad].add(user)
    answer = [0 for _ in range(len(id_list))]

    for i in range(len(id_list)):
        user = id_list[i]
        if user not in reportHash:
            continue

        for bad in reportHash[user]:
            if len(resultHash[bad]) >=k:
                answer[i] +=1
    answer = []



    return answer