Path to ICPC

Codeforces does not provide good methods to train. You have regular contests (which take place at 7am Vancouver time...), virtual contests, and the problemset. If you want a timed practice experience that lasts less than two hours, you're out of luck. The main purpose of this project is to create a practice environment that is a little more flexible, allowing for the completion of individual problems under timed conditions.

Methodology

Most codeforces problems have an associated rating. A user with a rating of $r$ has a greater than 50% chance of solving any problem with rating $r_1\le r$ within its contest period. We extrapolate and bastardise this fact to calculate our own ratings without needing to sit full contests.

Project Structure

backend/   Go HTTP API
frontend/  Vite + React single-page app

Backend

cd backend
go run .

The API runs on http://localhost:8080 by default.

Available endpoints:

• GET /api/health
• GET /api/message
• POST /api/auth/register
• POST /api/auth/login
• GET /api/auth/me
• POST /api/auth/logout
• GET /api/user.info?handles=tourist
• GET /api/user.status?handle=tourist
• GET /api/problemset.problems

Account endpoints use MySQL. Configure either a full DSN:

MYSQL_DSN='user:password@tcp(127.0.0.1:3306)/pathtoicpc?parseTime=true&charset=utf8mb4&collation=utf8mb4_unicode_ci' go run .

or individual values:

DB_NAME=pathtoicpc DB_USER=root DB_PASSWORD=password go run .

The backend creates the users and user_sessions tables on startup when MySQL is configured.

Set a custom port with:

PORT=9000 go run .

Frontend

cd frontend
npm install
npm run dev

The frontend runs on http://localhost:5173 by default. During development, Vite proxies /api requests to the Go backend.

Routes:

• /
• /account
• /about
• /dashboard