CPT

competitive programming template

Usage

TL;DR: implement your main in source/example.cpp.

To create a new executable, copy .template.cpp to the source folder and add the line add_executable([name] [name].cpp) to source/CMakeLists.txt. There is a bash script that does these two steps, e.g., ./create [name]. Or write all your code in source/example.cpp, reset the file when done and depend on the judging systems to keep your code :)

Setup

Most modern IDEs should have CMake support. Just open this folder in your IDE. You need to have a compiler installed and it should be GCC, because that's what most juding systems use. When using clang the <bits/stdc++.h> header does not work.

VSCode + Docker

You can open this repo inside a devcontainer in VSCode. It has all the settings and compiler already installed and ready to go. This just needs Docker and VSCode with the Dev Containers Extension.

Works on all operating systems!

Linux

You have GCC installed already. Use CLion, VSCode, or the devcontainer.

Windows

If you do not want to use the devcontainer, I recommend a WSL and Clion setup.

MacOS

Same as Linux. Optionally install GCC to use the bits header or just use the devcontainer. If you want to use podman instead of docker, then dismiss the promt to install docker and change the Docker Path setting of the dev containers extension from docker to podman.

Sanitizers

I enabled sanitzers for gcc and clang via CMake.

For easier debugging, set ASAN_OPTIONS=abort_on_error=1 and UBSAN_OPTIONS=abort_on_error=1. This will open the debugger when the sanitizer finds an error.

The devcontainer already does this for you. Clion has a settings page for these options. Go to Settings / Preferences | Build, Execution, Deployment | Dynamic Analysis Tools | Sanitizers and put abort_on_error=1 under AddressSanitizer and UndefinedBehaviorSanitizer.

When debugging reaches end of main the sanitizer might falsely detect an error. Ignore this.