Problem:
Score : 100 points

Problem Statement

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.

Sample Input 1

2

Sample Output 1

14

When a = 2, we have a + a^2 + a^3 = 2 + 2^2 + 2^3 = 2 + 4 + 8 = 14.

Print the answer as an input. Outputs such as 14.0 will be judged as incorrect.

Sample Input 2

10

Sample Output 2

1110

Solution in Go (1.14.1) (judge verdict: Wrong Answer)

package main

 import (
 	"fmt"
 	"math"
 )

 func solution(n int) int {
 	out := 0
 	for i := 1; i <= n; i++ {
 		out += i * count(i)
 	}
 	return out
 }

 func count(n int) int {
 	out := 1
 	for i := 2; i <= int(math.Sqrt(float64(n))); i++ {
 		c := 0
 		for n%i == 0 {
 			c++
 			n /= i
 		}
 		out *= (c + 1)
 		if n == 1 {
 			break
 		}
 	}
 	if n != 1 {
 		out *= 2
 	}
 	return out
 }

 func main() {
 	var n int
 	fmt.Scan(&n)
 	fmt.Println(solution(n))
 }