Sum of Squares

Given a non-negative integer n, your task is to compute the sum of the squares of all integers from 1 to n. In mathematical notation, you need to calculate:

$$S = \sum_{i=1}^{n} i^2$$

For instance, when n = 5, the result is 55 because \(1^2 + 2^2 + 3^2 + 4^2 + 5^2 = 55\).

inputFormat

The input consists of a single non-negative integer n provided via stdin (e.g. 0 ≤ n ≤ 10⁶).

outputFormat

Output a single integer representing the sum of the squares of all integers from 1 to n on stdout.

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