Prof. Rajyaguru is working on creating encryption techniques to encrypt the messages he sends to his colleague

Prof. Rajyaguru is working on creating encryption techniques to encrypt the messages he sends to his colleague.

He encrypts the message by following procedure

-He replaces all the spaces in message by '*' character.

-He takes characters of message and puts it in a grid of K columns(where K > 1).

-He fills remaining character in a grid by '$' character

-He then reads the message by column wise and from the bottom of the grid.

For Example:

If the message is : Welcome to CodeTrac And the value of K is 4 (columns = 4)  The grid will be: 

W e l c o m e * t o * C o d e T

r a c $

Encrypted Message will be : rotoWadomece*el$TC*c 

Input

Command Line Arguments: First Argument will be value of K and second argument will be message to be encrypted Output Format: 

Encrypted message 

Example

Example 1:  Command Line Argument: 4 "Welcome to CodeTrac" 
Output: rotoWadomece*el$TC*c 


Example 2: Command Line Argument: 3 "Meet me in my office" 
Output: cfynetMef****e$iomime


Example 3: Command Line Argument: 5 "Meet me in my office" 
Output: f*mMfmeeiy*ec*iteon* 

solution
under construction