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A - Perímetro mínimo

Languages: C, C++, Java, Pascal, Haskell, Python, JavaScript, Tiger, Kotlin, C#

Time & Memory limits: (details)

Calcule el perímetro mínimo de un rectángulo de área $A$.

Input

Línea #1: Un entero $A$ representando el área del rectángulo - $(1 \leq A \leq 10^6)$.

Output

Línea #2: $P$, el valor del perímetro mínimo de un rectángulo de área $A$. $P$ no debe diferir en valor absoluto en más de $10^{-5}$ de la respuesta correcta.

Sample test(s)

Input

Output