"Informatics Stars" Online Contests - 2011-2014 |
Start: Oct.20.2012 at 10:00:00 AM
Finish: Oct.20.2012 at 03:00:00 PM
The contest is finished!
• Contest scoreboard
|
Feedback | | If you notice incorrect translations in Contester, please let author know.
|
|
Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.
Inner Product
Shqip
Write a program for the Inner product. The program returns (also called the "dot product" or "scalar product")
Inner Product of the first n elements of "a" with the first n elements of "b". This is defined as the sum
of the products of corresponding terms. For example, if "a" is the array
{2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9}
and "b" is the array {4.0, -3.0, 2.0, -1.0, 0.0, 0.0, 0.0, 0.0} , then the call innerProduct(a,8,b) would return:
(2.2)(4.0) + (3.3)(-3.0) + (4.4)(2.0) + (5.5)(-1.0) + 0 + 0 + 0 + 0 = 2.2 .
Input specification
The first line will contain a number: n, the number of numbers in the arrays where 1 < n ≤ 1000. The second and third lines will have n (space separated) floating point numbers
where each number in the arrays are in the range: -10000.00 ≤ ai , bi ≤ 10000.00
Output specification
Show a floating point number with one decimal that represents the inner product of the arrays.
|
Input I
|
5
-4.0 3.8 6.0 -7.8 6.2
5.0 2.0 3.2 0.0 0.0
|
Output 1
|
6.8
| |
Для отправки решений необходимо выполнить вход.
|