git404hub

what is checker fr?

lss233/checker — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2021-01-14

C++Audience · developerComplexity · 2/5DormantSetup · moderate

tl;dr

A C++ testing tool for competitive programmers that auto-generates random test cases and compares your solution's output against a reference answer.

vibe map

mindmap
  root((repo))
    What it does
      Generates random test cases
      Runs your code vs reference
      Compares outputs automatically
    Tech stack
      C++
      testlib.h
    Use cases
      Stress test contest solutions
      Verify floating point answers
      Use custom special judges
    Audience
      Competitive programmers
      Contest participants
    Platforms
      Linux
      Windows

Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

what do people make with this?

VIBE 1

Stress test a competitive programming solution against a known-correct reference solution automatically.

VIBE 2

Verify answers that involve floating-point numbers or multiple valid outputs using a special judge.

VIBE 3

Catch edge-case bugs in a contest solution before submitting it to Codeforces or an ACM competition.

what's the stack?

C++testlib.h

how it stacks up fr

lss233/checkerachanana/mavsdkalange/llama.cpp
Stars——0
LanguageC++C++C++
Last pushed2021-01-142024-05-20—
MaintenanceDormantDormant—
Setup difficultymoderatemoderatemoderate
Complexity2/54/54/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · moderate time til it works · 30min

Configuration is done via a C++ header file, so changing settings requires recompiling the project.

No license information was found in the explanation.

prompts (copy fr)

prompt 1
Show me how to set up Main.cpp, Std.cpp, and Dmk.cpp so I can stress test my solution with Checker.
prompt 2
Help me write a custom special judge function for Checker to handle floating-point answers.
prompt 3
Explain how Checker's random test case generation and comparison loop works.
prompt 4
Walk me through compiling and running Checker on Windows for a competitive programming contest.

Frequently asked questions

what is checker fr?

A C++ testing tool for competitive programmers that auto-generates random test cases and compares your solution's output against a reference answer.

What language is checker written in?

Mainly C++. The stack also includes C++, testlib.h.

Is checker actively maintained?

Dormant — no commits in 2+ years (last push 2021-01-14).

What license does checker use?

No license information was found in the explanation.

How hard is checker to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is checker for?

Mainly developer.

peek the repo → explain another one

This repo across BitVibe Labs

double-check against the repo, no cap.

similar repos, if this ain't it