체육복

체육복 - 프로그래머스

def solution(n, lost, reserve):
    cnt = 0
    same = set(lost) & set(reserve)
    reserve = list(set(reserve) - same)
    for i in list(set(lost) - same):
        if i-1 in reserve:
            reserve.remove(i-1)
        elif i+1 in reserve:
            reserve.remove(i+1)
        else:
            cnt += 1
    return n - cnt