Butun daraja — manfiy ham

Haqiqiy son $x \ne 0$ va butun son $n$ berilgan. $x^n$ ni rekursiv funksiya bilan hisoblang:

$x^n = \begin{cases} 1, & n = 0, \\ x \cdot x^{n-1}, & n > 0, \\ 1 / x^{-n}, & n < 0. \end{cases}$

Bitta qatorda $x$ va $n$. $x$ — verguldan keyin ko'pi bilan $2$ xonali son, $0.1 \le |x| \le 10$; $|n| \le 20$. Javob $0.001 \le |x^n| \le 10^6$ bo'lishi kafolatlangan.

$x^n$ — verguldan keyin aniq $4$ xona (masalan, -0.1250).

Manfiy daraja musbat darajaga keltiriladi: $2^{-3} = 1 / 2^3 = 0.125$, shuning uchun ikkinchi misol javobi $(-2)^{-3} = -0.1250$. Python — print(f"{v:.4f}"), C++ — printf("%.4f\n", v), Go — fmt.Printf("%.4f\n", v).