Maximizing the Final Element

Given an array of integers, perform certain operations in order to satisfy some constraints. The constraints are as follows: The first array…

Efficient Janitor

The janitor of a high school is extremely efficient. By the end of each day, all of the school’s waste is in…

User-Friendly Password System

A website is programming an authentication system that will accept a password either if it’s the correct password or if it’s the correct password…

Hotel Construction

There are a certain number of cities in a country, some of which are connected with bidirectional roads. The number of roads…