In this episode of the Binary Search CP series, we solve the Multiplication Table problem from CSES using Binary Search on Answer — a unique variant involving counting in a 2D conceptual grid.
🎯 What You’ll Learn:
How to apply binary search in problems involving grids and counts
Logic behind finding the median in a multiplication table
Designing an efficient check() function without creating the matrix
Clean and optimal C++ implementation
CP intuition to approach non-array binary search questions
📎 Problem Link: https://cses.fi/problemset/task/2422/
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Multiplication Table (CSES) | Binary Search on Answer for 2D Array Problems | NatokHD