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

collections.Counter()

  • hzerryn
     + 0 comments

    Without using the Counter:

    # Enter your code here. Read input from STDIN. Print output to STDOUT
num_shoes = int(input())
shoes = list(map(int, input().split(' ')))

sizes = {}
# build shoe sizes dictionary
for i in shoes:
    if i in sizes:
        sizes[i] += 1
    else:
        sizes[i] = 1
        
num_customers = int(input())

customers = []
profit = 0

for i in range(num_customers):
    size, cash = map(int, input().split(' '))
    if size in sizes:
        if sizes[size] != 0:
            profit += cash
            sizes[size] -= 1
        
print(profit)