A. N integers
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

An integer reserves 4 bytes in the memory.

Your program needs to define $$$n$$$ integers, print how many bytes in the memory in total will be reserved.

Input

The input will contain only one integer $$$n$$$ $$$(1 \leq n \leq 100)$$$, the number of defined integers in your program.

Output

You should print how many bytes will $$$n$$$ integers reserve in memory.

Examples
Input
4
Output
16
Input
2
Output
8