Set Add() in Python HackerRank Solution

Hello Programmers, In this post, you will know how to solve the Set Add() in Python HackerRank Solution. This problem is a part of the HackerRank Python Programming Series.

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One more thing to add, don’t directly look for the solutions, first try to solve the problems of Hackerrank by yourself. If you find any difficulty after trying several times, then you can look for solutions.

Set Add() in Python HackerRank Solution

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If we want to add a single element to an existing set, we can use the .add() operation.
It adds the element to the set and returns ‘None’.
Example :

>>> s = set('HackerRank')
>>> s.add('H')
>>> print s
set(['a', 'c', 'e', 'H', 'k', 'n', 'r', 'R'])
>>> print s.add('HackerRank')
None
>>> print s
set(['a', 'c', 'e', 'HackerRank', 'H', 'k', 'n', 'r', 'R'])

Task :

Apply your knowledge of the .add() operation to help your friend Rupal.
Rupal has a huge collection of country stamps. She decided to count the total number of distinct country stamps in her collection. She asked for your help. You pick the stamps one by one from a stack of N country stamps.
Find the total number of distinct country stamps.

Input Format :

The first line contains an integer N, the total number of country stamps.
The next N lines contains the name of the country where the stamp is from.

Constraints :

• 0 < N < 1000

Output Format :

Output the total number of distinct country stamps on a single line.

Sample Input :

7
UK
China
USA
France
New Zealand
UK
France

Sample Output :

5

Explanation :

UK and France repeat twice. Hence, the total number of distinct country stamps is 5 (five).

Set Add() in Python HackerRank Solutions

Set.Add() in Python - Hacker Rank Solution
# Python 3
# Enter your code here. Read input from STDIN. Print output to STDOUT
# Set.Add() in Python - Hacker Rank Solution START
N = int(input())
countries = set()
for i in range(N):
    countries.add(input())
print(len(countries))
# Set.Add() in Python - Hacker Rank Solution END

Disclaimer: The above Problem (Set Add() in Python) is generated by Hackerrank but the Solution is Provided by BrokenProgrammers. This tutorial is only for Educational and Learning purposes.

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