Competitive Programming Template for C#

The template is the dotnet custom template for competitive programming.

The template includes

Project
Solver class

How To Use

Install

You can install the template by dotnet cli. You can download the nupkg from Releases, then install the templates using a dotnet new command.

dotnet new -i {/path/to/}AconCavy.CompetitiveProgramming.Templates.{version}.nupkg

Create Project

After installing, you can create a project using a dotnet new cpproj command. And, you can specify the project name using a -n|--name option.

dotnet new cpproj -n Sample

And, you can specify a target framework using a -f|--framework option. The default target framework is a net7.0.

The target frameworks can be specified

net8.0
net7.0
net6.0
netcoreapp3.1

dotnet new cpproj -n Sample -f net6.0

Create Solver class

After creating the project, you can create a solver class in the project. You can create the solver class using a dotnet new cpsolver command in the project.

dotnet new cpsolver -n TaskA

Then, the class named TaskA will be created.

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Numerics;

namespace Tasks;

public class TaskA
{
    public static void Main()
    {
        using var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
        Console.SetOut(sw);
        Solve();
        Console.Out.Flush();
    }

    public static void Solve()
    {
        // implement here!
        // var x = Console.ReadLine();
        // Console.WriteLine(x);
    }
}

Create Tests class

You can check the behavior of the solver class using NUnit test class.

using NUnit.Framework;

namespace Tests;

public class Tests
{
    [Timeout(2000)]
    [TestCase(
        @"", // input
        @"", // output
        TestName = "{m}-1")]
    public void SolverTest(string input, string output)
    {
        Utility.InOutTest(Tasks.Solver.Solve, input, output);
    }
}

You can also specify a relative error in the argument of the Utility.InOutTest method.

[Timeout(2000)]
[TestCase(
    @"1", // input
    @"0.125000000", // output
    TestName = "{m}-1")]
public void TaskATest(string input, string output)
{
    Utility.InOutTest(Tasks.TaskA.Solve, input, output, 1e-9); // relative error
}

Execution of the project

If you created multiple solver classes, you should change the StartupObject property in the {Project}.csproj to execute the specific task.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7</TargetFramework>

    <!--...-->

    <!-- update here -->
    <StartupObject>Tasks.TaskA</StartupObject>

  </PropertyGroup>

</Project>

Then, you can execute the solver class or tests.

dotnet run
dotnet test

Uninstall

You can uninstall the template.

dotnet new -u AconCavy.CompetitiveProgramming.Templates

AconCavy/cp-template-csharp