NZEC error on HS08TEST by python 3.6

This is my code below:

withdraw, balance = input().split(" ")
withdraw = float(withdraw)
balance = float(balance)
if (balance < withdraw+0.50):
    print(round(balance,2))
    
else:
        if(withdraw%5 == 0):
            print(round(balance-(withdraw+0.50), 2))
        else:
            print(round(balance,2))

Even i tried copy pasting the working submissions but still i am getting runtime error. Please help.

avoid using split(" ").
split() would suffice