Competitive programming is not just about knowing programming syntax—it’s a blend of logic, speed, and mathematics. Mastering a few essential math tricks can drastically boost your problem-solving skills and efficiency. Let’s explore the most powerful and commonly used math techniques in competitive programming. Number of times a prime p exist in n! Example find no. … Read more
GCD and LCM is a foundational concept in number theory and widely used in areas such as simplifying fractions, cryptography, and solving Diophantine equations. GCD (Greatest Common Divisor) GCD of 12 and 18 So, the GCD is 6 Euclidean Algorithm for GCD This is an efficient method to find GCD: Code Euclidean Algorithm, Why it … Read more
Matrices are fundamental data structures in computer science and mathematics. In competitive programming, matrices are widely used in problems involving 2D grids, dynamic programming, graph algorithms, geometry, and simulations. Basics of Matrices in Python Python doesn’t have a native matrix type. A matrix is typically represented as a list of lists: Concepts Matric Representation Initialisation … Read more
Competitive programming or sport programming is a mind sport involving participants trying to program according to provided specifications. Recursion Recursion is one of the most powerful and elegant tools in programming or even in competitive — but it can seem confusing at first. In this guide, you’ll learn what recursion is, how to identify recursive … Read more
Modulo % Example to show Modulus operator: Refer Extract Last Digit(s) of a Number Digit separation Reverse a number Decimal to binary Using Bitwise Refer Binary to Decimal Using bitwise Array Reverse an Array Array Rotation Method 1 : Using Mod (%) Consider it as circular array and use the property of mod Note: Point … Read more
Exception Bad Practice Recommended (Good Practice) Way 1 Way 2 Catching a too general Exception is generally considered a bad practice because: Idea Doc String format
Sequential Loops vs Nested Loop Two Sequential Loops (One After Another) Nested Loop Takeway
Here are some Python hacks for competitive programming that can help you write efficient and concise code. String Operation Join Synatx Example Perform join in integer Solution Dictionary When using a dictionary as an iterable, the returned values are the keys, not the values. Split The split() method splits a string into a list. You … Read more