Alice has \(2\) integers \(L\) and \(R\). Let \(X\) be the number we get by xoring all numbers in the range \([L,R]\) (including \(L\) and \(R\)). He recently learnt about even and odd numbers and wonders what will be the parity on \(X\).

Input Format:

First line contains \(2\) integers \(L\) and \(R\) 

Output Format:

Print "even" if the number \(X\) is even else print "odd" without the quotes. 

Constraints:

\(1 \leq L \leq R \leq 10^{18}\)