Can you solve this nice Indian Math Olympiad problem?

In today's episode, we will solve this problem from the 2020 Indian National Math Olympiad, where I introduced the technique of divide and conquer which is useful for a lot of Math Olympiad problems. The question itself is quite nice. While the solution itself is not too difficult, it does illustrate the core principle every problem solver should internalize : don't be afraid to play around and explore! Please leave a thumbs up and subscribe for more content.