Freaks City

A - Welcome to AtCoder Land This problem is a straightforward string comparison. We need to check if the first input string is "AtCoder" and the second input string is "Land". If both conditions are met, we output "Yes"; otherwise, we output "No". #include <iostream> #include <string> #includ ...

Ehab and the Expected GCD Problem The key insight is that the first element should have the maximum number of prime factors, and subsequent elements should remove at most one prime factor per step for optimality. The smallest prime factors are 2 and 3, and using 3 more than once is suboptimal (e.g., 5 can be replaced by 2² for better results). ...

Maximizing Collected Value from Falling Objects Given n falling objects on a 2D plane, each with a falling speed and initial height, starting from position (x0, 0). When directly aligned with an object, it can be collected instantly, yielding a value equal to its current height divided by 1000. The objective is to maximize the total collected v ...