Dsa
Hashing
Easy
Language Proficiency Tracker
You have a list of users and the languages they know. Each user can know multiple languages, listed on separate lines, with a blank line separating different users. Write a program that counts how many users know a specific language and prints the result.
Example:
Input:
user1
Python
Java
user2
Python
JavaScript
user3
Java
Python
Output:
2
Key concepts
hashingcounting
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