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Description

A snail is preparing to journey to a mysterious kingdom. It is known that it needs to eat vegetable leaves to replenish energy while crawling. For the first $6$ centimeters of its journey, it eats $5$ milligrams of vegetable leaves per centimeter. For any distance beyond $6$ centimeters, it eats $7$ milligrams of vegetable leaves per centimeter. Given that today it crawled $n$ centimeters towards the mysterious kingdom, how many milligrams of vegetable leaves will it eat?

Input Format

Input is an integer $n$, representing the distance the snail crawled ($1≤n≤10$).

Output Format

Output a single line containing one integer, representing the number of milligrams of vegetable leaves the snail ate.

Sample

5

25