深海沧澜的博客

You’re playing hopscotch! You start at the origin and your goal is to hop to the lattice point (N,N)(N,N). A hop consists of going from lattice point (x1,y1)(x1,y1) to (x2,y2)(x2,y2), where x1<x2x1...

Ms. Thomas is managing her class of nn students.She placed all her students in a line, and gave the ii-th student from the left a card with the letter aiai written on it.She would now like to rear...

You have an upcoming trip to Washington D.C. and you are fascinated with the intricacies of Congressional committee hearings. You wish to attend as many hearings as possible during your trip, and your...

Professor Zac is trying to finish a collection of tasks during the first week at the start of the term. He knows precisely how long each task will take, down to the millisecond. Unfortunately, it is a...

The IT department at your school decided to change their password policy. Each password will have to consist of N 6-digit numbers separated by dashes, where N will be determined by the phase of the mo...

Alice and Bob are in their class doing drills on multiplication and division. They quickly get bored and instead decide to play a game they invented.The game starts with a target integer N≥2, and an...

grid of cellsFlow Free is a puzzle that is played on a 2D grid of cells, with some cells marked as endpoints of certain colors and the rest of cells being blank.To solve the puzzle, you have to ...