[Python][프로그래머스][Level1] 체육복

def solution(n, lost, reserve):
    lost2 = [i for i in lost if not i in reserve]
    reserve2 = [i for i in reserve if not i in lost]
    answer = n - len(lost2)
    
    for i in lost2:    
        if i-1 in reserve2:
            reserve2.remove(i-1)
            answer+=1
        elif i+1 in reserve2:
            reserve2.remove(i+1)
            answer+=1
    return answer