The first lake

Annoula has traveled to the Kingdom of the Magical Lakes that change the objects that sink into them. However, the first lake she encounters is not magical. No matter how many objects she throws into it, when she looks at them they remain the same. Can you write a program that takes as input the number of pebbles Annoula throws in and outputs the number of pebbles she sees?

Input The number of pebbles that Annoula throws into the lake.

Output The number of pebbles that Annoula sees at the bottom of the lake.

Example

Input
4

Output
4