题解 | 记票统计

import sys

n = int(input())
lc = list(input().split())
m = int(input())
lv = list(input().split())

d ={}
inva = 0
for i in lv:
    if i in lc:
        if i not in d:
            d[i] =1
        else:
            d[i]+=1
    else:
        inva +=1
for i in lc:
    if i not in lv:
        print("{} : 0".format(i))
    else:
        print("{} : {}".format(i,d[i]))
print("Invalid : {}".format(inva))