题目描述
Given an integer a as input, print the value a + a^2 + a^3.
Constraints
- $1 \leq a \leq 10$
- a is an integer.
Input
Input is given from Standard Input in the following format:
a
Output
Print the value a + a^2 + a^3 as an integer.
Examples
Input
2
Output
14
Input
10
Output
1110
输入格式
见题面
输出格式
见题面
样例输入
2
样例输出
14