Hello Regexp

Write a regular expression that will match texts like “Hello {X}” and only output “{X}” (w/o quotes).

If a match is not possible, the output should be empty.

Input

The input will contain a single line of string with at most 20 characters.

Output

If the input matches “Hello {X}”, then print “{X}” (w/o quotes). Otherwise leave the output empty.

Samples

Input	Output
Hello Regexp	Regexp

Input	Output
Nyan Cat