Why am I getting runtime time error?

Deposit = float(input())
n = int(input())
i = 0
while i <=n:
    Withdraw = int(input())
    if Withdraw % 5 == 0 and (Withdraw+0.50)<= Deposit:
        Deposit = Deposit - (Withdraw + 0.50)
        print("%.2f"%Deposit)
    elif Withdraw % 5 != 0 and (Withdraw+0.50) <= Deposit:
        print("%.2f"%Deposit)
    elif Withdraw > Deposit:
        print("%.2f"%Deposit)