Merge the Tools! HackerRank solution

def merge_the_tools(string, k):

    # your code goes here

    s = string

    n = len(s)

    m=0


    for i in range(k,n+1,k):

        l=list(s[m:i])

        m += k

        r =[]

        for o in l:

            if o not in r:

               r.append(o)

        for j in r:

            print(j,end='')

        print()

if __name__ == '__main__':

    string, k = input(), int(input())

    merge_the_tools(string, k)



inpiut : 

AABCAAADA

3 


output:

AB

CA

AD

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