Set-Based Problem

Problem Statement

Input Format

Line 1: First word string. Line 2: Second word string.

Output Format

Print the count of common unique characters.

Constraints

Valid words

Sample Input

programming
python

Sample Output

4

Explanation

Convert both words to sets of characters and find their intersection size.

Starter Code

def common_char_count(w1, w2):
    # Write your code here
    pass

w1 = input()
w2 = input()
print(common_char_count(w1, w2))

Limits

• Time Limit: 1s
• Memory Limit: 256MB