每日学习

2404 Too lazy to write the description

Time Limit : 2000/1000 MS(Java/Others) | Memory Limit : 65536/32768 KB(Java/Others)

Submits : 2 | Solved : 2

Description

Input

An integer N(0< N<=18).

Output

An integer.

Sample Input

Sample Output

HINT

Source

[ Top ] | [ Submit ]