We say that a string is *odd* if and only if all palindromic substrings of the string have odd length. Given a string $s$, determine if it is *odd* or not. A substring of a string $s$ is a nonempty sequence of consecutive characters from $s$. A palindromic substring is a substring that reads the same forwards and backwards.

The input consists of a single line containing the string $s$ $(1 \le |s| \le 100)$. It is guaranteed that $s$ consists of lowercase ASCII letters ($\text{a}$ – $\text{z}$) only.

If $s$ is *odd*, then print `Odd.` on a single line. Otherwise, print `Or not.` on a single line.

2017 Pacific Northwest Region Programming Contest