Category
Similar Problems
0171. Funksiya6
Time limit : 1000 ms
Memory limit : 64 mb
O`lchami $n$ bo`lgan $x$ massiv va $k,m$ natural sonlar berilgan quyidagi ifodani xisoblang.
$$\frac{\displaystyle\sum_{i=1}^{m - k}x_i+\displaystyle\sum_{i=1}^{k}x_i}{(\displaystyle\sum_{i=1}^{m}x_i-\displaystyle\sum_{i=1}^{4}x_i)^2}$$
Kiruvchi ma`lumotlar: Birinchi satrda $n$ ikkinchi satrda massiv elementlari va uchinchi satrda esa $k$ va $m$ berilgan ($1\le k \le m \le n$)
Chiquvchi ma`lumotlar: Masala yechimi $10^{-2}$ aniqlikda aniqlansin
Input |
---|
4 44 99 55 12 1 3 |
Output |
1.30 |
Input |
---|
9 35 51 85 14 6 18 62 34 66 4 6 |
Output |
0.47 |