Tax Calculation Challenge

You are given an annual income in yen. Your task is to compute the total tax based on the following tiered rules:

• No tax is applied on the first 1000 yen.
• A tax rate of 10% is applied on the portion of the income from 1001 to 5000 yen. In mathematical terms, if \(I\) is the income and \(1000 < I \le 5000\), then the tax is computed as \((I - 1000) \times 0.1\).
• A tax rate of 20% is applied on the portion of the income above 5000 yen. That is, if \(I > 5000\), then the tax is \(400 + (I - 5000) \times 0.2\), where \(400\) is the tax for the income between 1001 and 5000 yen (since \(4000 \times 0.1 = 400\)).

Your program should read a single integer from standard input and output a single integer representing the calculated tax.

inputFormat

A single integer representing the annual income in yen.

outputFormat

A single integer representing the total tax computed according to the specified rules.## sample

1000

0