Given an array of integers, determine whether the sum of its elements is even or odd.

The return value should be a string ("odd" or "even").

If the input array is empty, consider it as an array with a zero ([0]).

Examples

even_or_odd([0]) ➞ "even"

even_or_odd([1]) ➞ "odd"

even_or_odd([]) ➞ "even"

even_or_odd([0, 1, 5]) ➞ "even"

Notes

N/A