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Statement

Timothy has been teaching new students about operation and maintenance recently.

Given a command, if it requires administrator privileges, the sudo command should be prefixed. The apt command also requires administrator privileges to run. Please determine whether the command entered by Timothy is correct.

Each command and parameter are separated by a space.

Input

A string $s$ whose length satisfies $0< |s|\leqslant 256$

Output

If correct, output zsh:success. Otherwise, output zsh:permission denied. Note the output of spaces, and the output is not case-sensitive.

Samples

sudo apt install vim

zsh:success

For the first set of examples, we used the apt command but required sudo permission, so it was successfully executed.

sudo cmd fjsaiodhfuiosa

zsh:success

For the second set of examples, we did not use the apt command, which does not necessarily require sudo privileges, so it can also be executed successfully.

sudo cmd apt

zsh:success

For the third set of examples, apt is not a command but a parameter, and it does not necessarily require sudo permission, so it can also be executed successfully.

apt install vm

zsh:permission denied

For the fourth set of examples, apt is used as a command, but sudo does not appear, resulting in refusal to execute.