Letters at position of multiples of a number

Letters at position of multiples of a number  

Problem:

A string of length L consists of characters is passed as input to the program. A given number N is also passed as the input to the program. The program must print the characters at the positions which are multiples of the given number. 

Input Format: 

The first line will contain the string of length L. 

The second line will contain the number N. 

Boundary Conditions: 

3 <= L <= 50 

1 <= N <= 30 

Output Format: 

The characters at the positions which are multiples of the given number. 

Example Input/Output 1: 

Input: 

abcdef 

3 

Output: 

cf 

Explanation: 

Multiples of 3 are like 3,6,9,... So the characters at positions 3,6 namely c and f are printed as output. 

Example Input/Output 2: 

Input: 

environment 

2 

Output: 

niomn 

Explanation: 

As it must be multiples of 2, the characters at even positions are printed as output.

Program: 

s = input().strip()

n = int(input()) 

for i in range(n-1,len(s),n):

    print(s[i],end="")

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