Fading Coder

This article presents concise, robust solutions to two distinct algorithmic problems from a competitive programming context: parsing and decoding HTTP-like header structures using Huffman tree reconstruction, and computing the minimum excluded value (MEX) on tree paths via persistent segment trees....

Power Decomposition Given an integer n, output its representation as a sum of distinct powers of two in descending order, or -1 if n is odd. #include <iostream> using namespace std; int main() { int val; cin >> val; if (val % 2 != 0) { cout << "-1"; return 0; } for (int e...