Tax#662

Tax

1 second
64 megabytes
Very easy

In a certain country, inflation has soared to such an extent that citizens' incomes are represented by numbers with up to digits. This situation has made tax collection significantly more challenging.

One of the income taxes is set at . Your task is to write a program that calculates this tax for a given income amount .

The following rounding rules must be applied:

  1. If the tax is a whole number, it remains unchanged.

  2. If the tax is a fractional number, it should be rounded up to the nearest whole number (benefiting the state).

Input

You will be given a single number (a natural number, 10^5 \le D < 10^{200}) representing a citizen's income.

Output

Output a single natural number, which is the calculated tax amount.

Examples

Example 1

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