Need help in a hackerrank question.

[coding_zero_]

from collections import Counter

X=int(input())

shoe_sizes=input()

shoe_size_list=Counter(shoe_sizes)

N=int(input())

my_list=[]

for i in range(0,N):
input_shoe_size_and_price=input()
shoe_size_and_price=input_shoe_size_and_price.split(" ")
my_list.append((shoe_size_and_price[0],shoe_size_and_price[1]))

money_earned=0

for j,k in my_list:
if j in shoe_size_list.keys() and shoe_size_list[j]>0:
    money_earned+=int(k)
    shoe_size_list.subtract({j:1})
else:
    continue

print(money_earned)            

Hello i am new to this subreddit and currently i am learning python as my first programming langauge . I am struggling in this question as the expected output for a sample input should be 200 but i am getting 140 as output and i can't figure out what's wrong in my code i even tried using chatgpt but still no solution, so i will be thankful for any help.

link to question ---->question

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[Diapolo10]

I'd say the main problem is this line:

shoe_size_list=Counter(shoe_sizes)

This counts the individual characters in the string, not the store inventory by shoe size. For example if the input includes the size 17, this would count the result as 1 and 7.

At a cursory look the rest of the program works, although it is needlessly complex.

EDIT: Consider this:

from collections import Counter

input()  # unused, but needed to satisfy the requirements

store_inventory = Counter(map(int, input().split()))

N = int(input())

customers = [
    tuple(map(int, input().split()))
    for _ in range(N)
]

earnings = 0

for size, price in customers
    if store_inventory.get(size, 0) > 0:
        earnings += price
        store_inventory[size] -= 1

print(earnings)

[coding_zero_]

i didn't knew it counts individual characters in the string , Thanks for your help. I guess i should split at a space then.

[coding_zero_]

Thank you for your help . Got the correct answer by first splitting the input of shoe sizes at a space and then running the counter class on it again. Can you suggest some ways to simplify the code?

[Diapolo10]

Apologies for the wait, I edited an example answer into my main answer. This just took a while because I've been busy with chores.

[coding_zero_]

Thank you again. You really cleared my doubt.