Rickrolling

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Points: 5
Time limit: 2.0s
Memory limit: 64M
Author:
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Problem type

On the internet, a common joke is to trick a person into clicking a link to a song named "Never Gonna Give You Up" by Rick Astley.

Evan notices that links going to "Never Gonna Give You Up" often contain a permutation of the string dQw4w9WgXcQ. Evan wants to avoid being tricked into clicking a link to this song. Can you write him a program to check if a link goes to "Never Gonna Give You Up"?

Input Specification

Each test case contains one line of text with a length of 1 000 characters or less, containing alphanumeric characters.

Output Specification

Output rickroll if the link goes to "Never Gonna Give You Up".

Output not a rickroll if the link does not go to "Never Gonna Give You Up".

Sample Input

C1cEF50Rn0cxDnPg4WX9cwwQQdnjutTS2FXE

Sample Output

rickroll

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