Competitive Programming Setup for Linux

This guide explains how to set up a competitive programming environment in Linux using VS Code and Sublime Text.

For Windows

For the Windows setup, refer to this link.

Steps for Setup in VS Code

1. Setting up VS Code

1. Open the folder where you have your executable files in VS Code.
2. Inside this folder, create a .vscode folder.
3. Within the .vscode folder, create two files: launch.json and tasks.json.

2. Configure launch.json

Copy and paste the following content into your launch.json file:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Run C++",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/${fileBasenameNoExtension}.out",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "preLaunchTask": "Compile and Run",
            "miDebuggerPath": "/usr/bin/gdb"
        }
    ]
}

3. Configure tasks.json

Copy and paste the following content into your tasks.json file:

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Compile and Run",
            "type": "shell",
            "command": "bash",
            "args": [
                "-c",
                "g++ -g -DDEBUG ${relativeFile} -o ${fileBasenameNoExtension}.out && ./${fileBasenameNoExtension}.out < input.txt > output.txt && rm ${fileBasenameNoExtension}.out"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "problemMatcher": {
                "owner": "cpp",
                "fileLocation": ["relative", "${workspaceRoot}"],
                "pattern": {
                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
                    "file": 1,
                    "line": 2,
                    "column": 3,
                    "severity": 4,
                    "message": 5
                }
            }
        }
    ]
}

4. Modify Input and Output Files

• Update input.txt and output.txt in the tasks.json file to the names of your input and output files.
• Replace -DDEBUG with a custom macro name.

5. Running the Code

1. Open your .cpp file in VS Code.
2. Press Ctrl+Shift+B to build and run the program.
3. The program will execute with the specified input and output files.

Steps for Setup in Sublime Text

1. Create a Custom Build System

1. Create a new build system in Sublime Text (Tools > Build System > New Build System).
2. Name the file your_name.sublime-build and paste the following content:

{
    "cmd": ["g++", "-Dchandan", "-Wextra", "-Wall", "-std=c++20", "$file", "-o", "$file_base_name.out"],
    "file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$",
    "working_dir": "$file_path",
    "selector": "source.cpp",
    "variants": [
        {
            "name": "Run",
            "cmd": ["bash", "-c", "g++ -Dchandan -Wextra -Wall -std=c++20 '$file' -o '$file_base_name.out' && './$file_base_name.out' < input.txt > output.txt"]
        }
    ]
}

2. Modify Input and Output Files

• Update input.txt and output.txt in the your_name.sublime-build file to the names of your input and output files.
• Replace -Dchandan with a custom macro name if needed.

3. Running the Code

1. Open your .cpp file in Sublime Text.
2. Press Ctrl+B to build and run the program.
3. The program will execute with the specified input and output files.

Notes

• -DDEBUG is a preprocessor directive. You can change this to any name that suits your preference.
• Ensure the g++ compiler and gdb debugger are installed on your Linux system.

Enjoy your seamless competitive programming setup!