🔹 Step 1. Go to the registration page

👉 https://codeforces.com/contests/2105

• Read the terms and conditions
• Enter your Telegram handle (@username)
• Check the consent box
• Click Register

⚠️ If you see an error — you need to add your TON wallet (see Step 2)

🔹 Step 2. Add your TON wallet to your profile

👉 https://codeforces.com/settings/wallets

• Paste your wallet address
• Click Get code to receive an email
• Enter the code into Secret Code
• Click Save changes

💡 Don’t have a wallet? Create one via https://ton.org/en/wallets?locale=en&pagination[limit]=-1

🔹 Step 3. Complete your registration

Go back to the contest page and click Register again