There are many distinct pleasures associated with computer programming. Craftsmanship has its quiet rewards, the satisfaction that comes from building a useful object and making it work. Excitement arrives with the flash of insight that cracks a previously intractable problem. The spiritual quest for elegance can turn the hacker into an artist. There are pleasures in parsimony, in squeezing the last drop of performance out of clever algorithms and tight coding. The games, puzzles, and challenges of problems from international programming competitions are a great way to experience these pleasures while improving your algorithmic and coding skills. This book contains over 100 problems that have appeared in previous programming contests, along with discussions of the theory and ideas necessary to attack them. Instant online grading for all of these problems is available from two WWW robot judging sites. Combining this book with a judge gives an exciting new way to challenge and improve your programming skills. This book can be used for self-study, for teaching innovative courses in algorithms and programming, and in training for international competition. The problems in this book have been selected from over 1,000 programming problems at the Universidad de Valladolid online judge. The judge has ruled on well over one million submissions from 27,000 registered users around the world to date. We have taken only the best of the best, the most fun, exciting, and interesting problems available.

The host of titular podcast offers over sixty ideas to boost creativity, achieve fitness goals, increase productivity, improve relationships and more. Change isn’t always easy, but you can do it! Packed with powerful ideas for improving your life in all areas, including fitness, food, mindfulness, relationships, networking and more, this book shows how to create lasting habits by first succeeding at a thirty-day challenge. Author Rosanna Casper shares dozens of practical tips, helpful resources and her own secret tricks that will keep you motivated and committed through day thirty and beyond. If you’re ready to make some positive changes in your life, just pick a challenge and get started: Walk 10,000 steps thirty days without (added) sugar Cook one new recipe per day Get better sleep Get rid of clutter Take a photo every day Spend thirty minutes outdoors Read twenty pages a day

Directed to teachers, facilitators, and counselors, offers more than 170 cooperative activities for classrooms, summer camps, and family occasions designed to improve children's problem-solving skills and ability to collaborate.

What's YOUR personal best? Work your way through these weird and wonderful challenges and record your top scores along the way.

Challenges 2 employs the same structure and goals as Challenges 1 for the intermediate to high- intermediate learner. A greater focus is given to more sophisticated study and reading skills, assuming learners are encountering more academic language in their courses. This volume also features high-interest readings on topics like world records, animation, royal couples, space travel, the environment, and jazz.

Over the next 20 years, the further aging of already-old aircraft will introduce challenges and issues for aircraft operators. The technical challenges relate to structures, propulsion, and systems. The institutional challenges include limitations on independent verification of fleet status and future condition and on information needed for engineering analyses including risk assessment, and an overall scarcity of resources.