Background

This is the second problem in ZZOI.

You can try this easy problem which described in English, too.

Description

Give an integer n, print the parity of it.

Format

Input

An integer n, satisfying 0 <= n <= \( 10^{10^3} \) in the mathematical sense.

Output

A string, if n is even print "even", or print "odd".

Sample 1

Input

123

Output

odd

Limitation

1s, 64MiB for each test case.