Sum of Positive Even Numbers

ArrayMath

Given an array of integers, compute the sum of all the even numbers in the array that are positive.

Example 1

Input

[
  1,
  2,
  3,
  4,
  5,
  -6
]

Output

Explanation. The positive even numbers in the array are 2 and 4. Their sum is 6.

Example 2

Input

[
  -2,
  -4,
  -6
]

Output

Explanation. There are no positive even numbers in the array. Thus, the sum is 0.

Example 3

Input

[
  0,
  8,
  5,
  12,
  7
]

Output

Explanation. The positive even numbers in the array are 8 and 12. Their sum is 20.

Example 4

Input

Output

Explanation. The positive even numbers in the array are 22 and 44. Their sum is 66.

Follow-up: How would you optimize your solution if the input array is very large?

Constraints:

The array may contain both positive and negative integers, as well as zero. The array will contain at least one integer.