To'garak uchun
Contest Problems
Problem Tasks
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Not Contest
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D. Yakuniy_1_I
Time limit : 1000 ms
Memory limit : 64 mb
Berilgan yig’indini hisoblang:
$$s = \frac{x \cdot (1 + 1)!}{1!}+\frac{x^2 \cdot (2 + 1)!}{2!} + ... + \frac{x^n \cdot (n+1)!}{n!}$$
Kiruvchi ma’lumotlar: Birinchi satrda $n$ ($1 \le n \le 10)$ va $x$ $(1 \le x \le 8)$ butun sonlar berilgan.
Chiquvchi ma’lumotlar: Yagona $S$ butun sonni chop qiling.
Input |
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2 1 |
Output |
5 |
Input |
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4 6 |
Output |
7464 |