数据结构与算法：才知道字典可以这么用

n ,m = map(int, input().split())
money = list(map(int, input().split()))
for _ in range(m):
    a = int(input())
    print(money.count(a))

现在可以使用字典的方法

n ,m = map(int, input().split())
money = list(map(int, input().split()))
dic = {}
for i in money:
    c = dic.get(i,0)
    dic[i] = c + 1
for _ in range(m):
    a = int(input())
    print(dic.get(a,0))