The book "Materials on the discipline "Theory of algorithms and complexity of calculations" by Durnev B. G. published by Yaroslavl State University named after P. G. Demidova is a unique and deep resource for students, graduate students and anyone interested in the basics of computational theory. This work is not just a textbook, but a real guide to the world of algorithms, their effectiveness and complexity, which makes it indispensable for those who seek to understand how modern computing systems work. The book covers a wide range of topics related to algorithm theory, including basic concepts such as computational complexity, complexity classes, and various approaches to algorithm analysis. Durnev V. G. shares their knowledge and experience, providing readers with access to relevant materials that will help not only in learning, but also in practical activities. This publication will be especially useful for technical students, programmers and researchers who want to deepen their knowledge in the field of computer science. The topics raised in the book cover both theoretical aspects and practical applications of algorithms. Readers will be able to learn about different methods of solving problems, such as greedy algorithms, dynamic programming and algorithms on graphs. Particular attention is paid to complexity analysis, which allows you to understand how to choose the most effective algorithm for solving a specific problem. This book will be an excellent help for those who want not only to study algorithms, but also to apply them in real projects, which makes it relevant in the rapidly developing IT industry. The author's style is distinguished by clarity and accessibility of presentation, which allows even beginners in the field of computer science to easily absorb material. Durnev V. G. uses many examples and tasks that help to consolidate theoretical knowledge in practice. This makes the book not only useful, but also fascinating to read. Readers who are already familiar with the author's other works will appreciate his ability to explain complex concepts in a simple and understandable language. The book "Materials on the discipline "Theory of algorithms and complexity of calculations" will be of interest not only to students, but also to teachers who are looking for high-quality educational materials for their courses. It can be the basis for lectures and seminars, as well as serve as a reference guide for self-study. In addition to this, the work can attract the attention of software programming and development professionals who want to improve their skills in designing efficient algorithms. If you are looking for a quality literature on algorithm theory that combines theoretical knowledge and practical examples, then this book will be an excellent choice. It will not only expand your horizons, but also help you become more confident in your knowledge and skills in the field of computing. Do not miss the opportunity to immerse yourself in the world of algorithms with Durnev V. G. and discover new horizons in the study of computer science!