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 Kotlin (1.3.71) (judge verdict: Accepted)

import java.io.BufferedReader

fun main() = abc171a()

@OptIn(ExperimentalStdlibApi::class)
fun abc171a() = SimpleIO_abc171a().exec {
    val a = readLine().toInt()

    val answer = a + a * a + a * a * a

    println(answer)
}

// region kokokara template dayo (^o^)
@Suppress("unused", "HasPlatformType")
private class SimpleIO_abc171a {
    private val br: BufferedReader = System.`in`.bufferedReader()
    private val sb: StringBuilder = StringBuilder()
    fun readLine() = br.readLine()!!
    fun println() = sb.appendln()
    fun print(any: Any) = sb.append(any)
    fun println(any: Any) = sb.appendln(any)
    fun <T> print(any: Iterable<T>, separator: String) = sb.append(any.joinToString(separator))
    fun <T> println(any: Iterable<T>, separator: String) = sb.appendln(any.joinToString(separator))
    fun exec(action: SimpleIO_abc171a.() -> Unit) = run {
        Thread(null, { action() }, "(^o^)", 128 * 1024 * 1024).apply { start() }.join()
    }.run { kotlin.io.println(sb) }
}
// endregion kokomade template dayo (^o^)