Forest Queries II

CSESRange QueriesOpen on judge ↗

You are given an n \times n grid representing the map of a forest. Each square is either empty or has a tree. Your task is to process q queries of the following types: - Change the state (empty/tree) of a square. - How many trees are inside a rectangle in the forest? Input The first input line has two integers n and q: the size of the forest and the number of queries. Then, there are n lines

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI