tree structure

Daily Problem | CF1946C – Binary Search, DP, Tree Structure

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Problem Summary Given a tree with nodes, we need to delete exactly edges such that the number of nodes in all connected components after deletion is **at least **. The goal is to find the maximum integer that satisfies this condition. Solution Approach This problem is a typical case of “tree partitioning + binary search … Read more

A Beginner’s Guide to C++: Implementing Excel-Style Data Grouping Functionality

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A Beginner's Guide to C++: Implementing Excel-Style Data Grouping Functionality

Hello everyone! Today, I will guide you through implementing a very useful data grouping feature in C++ similar to that in Excel. 1. Basic Features of Excel’s Grouping Function The grouping function in Excel has three main features: Hierarchical Structure: Allows for the creation of multi-level groups Expand/Collapse: Toggle the display of details at any … Read more