BlueBook

A gas company has a monthly billing rate based on the total gas consumption by its customers. The charge varies according to the meter reading (m³). The rate structure is as follows:

Note: There are situations where the final reading may be less than the initial reading. For example, the initial reading might be 9980 while the final reading is 0015, indicating a consumption during the month of 35m³ because the meter has 'rolled over'.

Input Specification

For each customer, the program should read an account number ~0 \le A \le 99\,999~ and two meter readings ~0 \le M_1, M_2 < 10\,000~. ~M_1~ represents the reading at the beginning of the month while ~M_2~ represents the reading at the beginning of the next month. The first line of input will be the account number. The second line of input will be ~M_1~ followed by a space then ~M_2~. The input will be terminated if and only if a negative account number is entered.

Output Specification

For each customer, your program should re-output the customer's account number and then on a new line output the final charge in dollars rounded off to two decimal places.

Sample Input

34567
0000 0005
12345
0000 0015
-1

Sample Output

Account #: 34567
Bill: 6.59
Account #: 12345
Bill: 7.78