Description

Given a list of string elements, remove duplicated characters for each string element.

Input

The input consists of two lines:

1. A list of string elements presented in the one-line text with each element separated by a special separator string
2. The separator string

You need to remove the duplicated characters in each element. (Case insensitive)

For example, in the sample input,

1. There are duplicated c in the first element Ericc, it should be modified as Eri.
2. For element rRita, the r is duplicated with R, it should be modified as ita.

Note that you can use lower() in python to help you to check the characters.

text = "Ericc"

text_lower = text.lower()

print(text_lower) # "ericc"

To retrieve the character, you can use list index:

print(text_lower[0]) # "e"

Output

Print out a line of elements with duplicated characters of each element removed, where each element are connected by the above separator string in the input.

Note that there will be a new line default by python's print() function. If you are using python's print(), just ignore this line.

Sample Input  Download

Sample Output  Download

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Description

Given a specific line of text including text and operators, you need to print out the text and the operator for a multiple times.

Input

There's a line of text with the following syntax:

e1,e2,e3

Note that:

    1. Each element is separated by a ',' token.

    2. e1, e2 ,e3 represented 3 elements from given text.

Output

A line of text with the following operations:

e1: Representing the number of times of e2 needed to be printed.

e2: Representing the word that needs to be printed.

e3: Representing the operator that separates each of the word e2, and it should also exist in the beginning and in the end.

For example, the output would be like this:

e3e2e3e2......e3e2e3              <--- e2 exists e1 times.

 

Note that:

    1. There will be no connection elements between e2 and e3 for your output.

    2. There will be a new line default by python's print() function. If you are using python's print(), just ignore this point.

    3. You can use split() function to separate the elements from one string.

Sample Input  Download

Sample Output  Download

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Description

Given a set of elements and another set of unwanted elements, remove the unwanted elements.

Input

There are two lines for the input, which are

1. The set of elements
2. The set of unwanted elements

e₁ e₂ e₃ ... e_n                <--- elements 1~n

u₁ u₂ ... u_m                   <---- unwanted elements 1~m

Note that

1. Each element is separated by a SPACE token.
2. You need to remove the elements e which also exist in u. (Case sensitive)

Hint: You can use an index to find an element in a list

elements = [1, 2, 3]

print(elements[1]) # 2

Output

Print out a line of elements with unwanted elements removed, where each element are connected by a SPACE token (" ").

Note that there will be a new line default by python's print() function. If you are using python's print(), just ignore this line.

 

Sample Input  Download

Sample Output  Download

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