[プログラマー]楽透の最高と最低ランキング

def solution(lottos, win_nums):
    answer = []
    
    cnt = 0
    zeros = 0
    for num in lottos:
        if num in win_nums: 
            cnt += 1
        elif num == 0:
            zeros += 1
    
    worst = 7 - cnt 
    best = 7 - (cnt + zeros)
    
    if worst == 7: 
        worst = 6
    if best == 7:
        best = 6

    return [best, worst]