Masala E

Xotira 16 MB Vaqt 1000 ms

14

Muallif: Asilbek Sunnatov

Nisbat 2

Quyidagi formulani hisoblang:

$\cfrac{a + a^2+a^3+\dots+a^n}{a^{-1}+a^{-2}+\dots+a^{-n}}$

Kiruvchi ma'lumotlar:

INPUT.TXT kirish faylining birinchi satrida ikkita natural son $a \le 10^9, n \le 1000$ beriladi

Chiquvchi ma'lumotlar:

Masala javobini $10^9+7$ ga bo'lgandagi qoldiqni chop eting

Misollar

#	input.txt	output.txt
1	2 2	8

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