Search⌘ K
AI Features

Cherry Pickup

Explore how to apply dynamic programming strategies to solve the Cherry Pickup problem in a grid. Understand the steps to navigate through cells, collect cherries, avoid thorns, and maximize your score by efficiently planning a path from the top-left to bottom-right corner and back. This lesson builds skills in optimization and pathfinding useful for complex coding interview questions.

Statement

You are given an n×nn \times n grid representing a field of cherries. Each cell in the grid can have one of three possible values:

  • 00: An empty cell that can be walked through

  • 11: A cell containing a cherry that can be picked and then passed through

  • 1-1: A cell containing a thorn, which cannot be crossed

Your task is to find the maximum number of cherries that can be collected while following these rules:

  1. Start at the top-left corner ...