First N Common Characters

Two string values S1, S2 are passed as the input. The program must print first N characters present in S1 which are also present in S2.

Input Format:
The first line contains S1.
The second line contains S2.
The third line contains N.

Output Format:
The first line contains the N characters present in S1 which are also present in S2.

Boundary Conditions:
2 <= N <= 10
2 <= Length of S1, S2 <= 1000

Example Input/Output 1:
Input: abcbde
cdefghbb
3

Output: bcd

Note:
b occurs twice in common but must be printed only once.

Source Code://Python:

from collections import OrderedDict

n=input().strip()

v=input().strip()

m=int(input())

n=list("".join(OrderedDict.fromkeys(n)))

v=list("".join(OrderedDict.fromkeys(v)))

x=[x for x in n if x in v]

print("".join(x[i] for i in range(m))