Score : $200$ points

Problem Statement

A string is called a KEYENCE string when it can be changed to keyence by removing its contiguous substring (possibly empty) only once.

Given a string $S$ consisting of lowercase English letters, determine if $S$ is a KEYENCE string.

Constraints

• The length of $S$ is between $7$ and $100$ (inclusive).
• $S$ consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

$S$

Output

If $S$ is a KEYENCE string, print YES; otherwise, print NO.

keyofscience

YES

keyence is an abbreviation of key of science.

mpyszsbznf

NO

ashlfyha

NO

keyence

YES