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Problems

Find the product

Find the product

Time limit 1 second
Memory limit 128 MiB

For the given positive integer n find the product

\left (1 + \dfrac{1}{1} \right ) \cdot \left (1 + \dfrac{1}{2} \right ) \cdot \ldots \cdot \left (1 + \dfrac{1}{n} \right )

Input data

One integer n\:(n \le 1000).

Output data

Print the value of the product with 6 decimal digits.

Examples

Input example #1
3
Output example #1
4.000000