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  1. Prepare
  2. Python
  3. Collections
  4. collections.Counter()
  5. Discussions

collections.Counter()

  • h1259611215
     + 0 comments
    from collections import Counter


n_shoes = int(input())
sizeList = input().split(' ')
sizeCounter = Counter(sizeList)
n_customer = int(input())
sum_ = 0
for _ in range(n_customer):
    desire_list = input().split(' ')
    if desire_list[0] in sizeCounter.keys() and sizeCounter[desire_list[0]] != 0:
        sum_ += int(desire_list[1])
        sizeCounter[desire_list[0]] -=1
print(sum_)