The Dissipating Pulse

A signal pulse starts at a specific cell (R, C) in a 2D grid with an initial energy E. The pulse spreads to the 4 adjacent neighbors. Each move costs '1 + |height_diff|' energy, where height_diff is the difference in cell values. The pulse stops spreading when its energy is less than the cost of the move. Calculate the total number of unique cells reached (including the starting cell). Input Format: Line 1: rows cols Next 'rows' lines: The grid values. Final line: startR startC initialE Output: Count of unique visited cells.