Sum of cubes

Python Easy loops

Task «Sum of cubes»

Write a program that finds the sum of cubes of all integers from 1 to N inclusive. It is guaranteed that N is positive and does not exceed 1000.

Input Format

One integer N (1 ≤ N ≤ 1000).

Output Format

One integer — the sum of cubes of numbers from 1 to N.

Examples

Example 1

INPUT
1
OUTPUT
1

Example 2

INPUT
3
OUTPUT
36
main.py