Assistant System Engineer

What is virtual memory?

Scheduling algos

Deadlock and its conditions

A thief wants to loot houses. He knows the amount of money in each house. He cannot loot two consecutive houses. Find the maximum amount of money he can loot.

Normalization

What is indexing in db?

What are different oops concepts?

Yogesh is a very intelligent student and is interested in research in Machine Learning domain. His college has only one professor, Mr. Peter working in that field. He approaches the professor for the same, but professor wants to test him first.

To pass the test Yogesh must answer Q questions correctly. In all the Q questions, professor gives him three positive integers : A, B and K where A ≤ B.

Now Yogesh has to find an integer P such that it is closest to integer A and there are at least K prime numbers in range [A, P], where A <= P <= B.

Help Yogesh to find and print minimum possible P or print -1 if there no such possible integer.

Note: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.