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Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.

Statement

 Goal

You want to easily encode and decode messages with a simple and personalized method. To do so, you will use a substitution method.

The principle is simple, you have a comparison table like this one:

A B
C D

and a message to encode written with the characters available in your table:

CBA

You are going to take each of the characters that compose the message and replace them by its position in the table:

C => 10 (row 1 column 0)
B => 01 (row 0 column 1)
A => 00 (row 0 column 0)

The message becomes: 100100
Input
Line 1: An integer rows for the number of rows of the table.
Lines 2 to rows + 1: A string for each row of the table. This string is composed of characters separated by one space.
Final line: The message to encode.
Output
Line 1: The encoded message.
Constraints
1 ≤ rows ≤ 10
Example
Input
2
A B
C D
CBA
Output
100100

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