A quick response (QR) code is a type of barcode that can be read by a digital device to provide a greater amount of information than would normally be feasible.

The CodeChef IDE lets you code right in your browser, making it easy to start practicing with their problem sets. Understanding time and memory limits is key; your code needs to be both fast and ...

Thinking about getting good at competitive programming, especially on a platform like CodeChef? It can seem like ...