Product of Squares

Given a positive integer N, compute the product of the squares of the first N natural numbers. In mathematical notation, you are required to compute:

$$\prod_{i=1}^{N} i^2$$

For example, when N = 3, the answer is 1² * 2² * 3² = 36.

inputFormat

The input consists of a single line containing a positive integer N (1 ≤ N ≤ 10⁵).

outputFormat

Output a single integer, the product of the squares of the first N natural numbers.

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