Cube Root Floor

Given a positive integer \(n\), compute the cube root \(\sqrt[3]{n}\) and then take the floor of the result, i.e. find \(\lfloor \sqrt[3]{n} \rfloor\).

The floor of a number is the greatest integer less than or equal to that number.

inputFormat

The input consists of a single line containing a positive integer \(n\).

outputFormat

Output a single integer which is the floor of \(\sqrt[3]{n}\).

sample

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