체육복

풀이

def solution(n, lost, reverse):
    _reverse = [r for r in reverse if r not in lost]
    _lost = [i for i in lost if i not in reverse]

    for r in _reverse:
        f = r-1
        b = r+1
        if f in _lost:
            _lost.remove(f)
        elif b in _lost:
            _lost.remove(b)
    return n - len(_lost)

참고 링크 - Link