journ = []
x = 0
k = 0
sold = 0
cmd = ',,'
while cmd[0] != 'QUIT':
    cmd = input().split()
    oper_name = cmd[0]
    if cmd[0] == 'BID':
        x = cmd[1]
        journ.append(x)
    elif cmd[0] == 'DEL':
        x = cmd[1]
        journ.remove(x)
    elif cmd[0] == 'SALE':
        x = cmd[1]
        k = int(cmd[2])
        for i in journ:
            if float(i) >= float(x):
                k -= 1
                sold += 1
            else:
                continue
print(sold * 0.01)

What is wrong ?