RADIOTHON WINTER 2026

Participant Application

• Pre-Qualification Challenge Required

• Estimated Time: 30 Minutes

• One Submission Per Team

• ~20% Acceptance Rate

⚠ TEAM SIZE LIMIT: Maximum 4 people per team (you + 3 additional members)

NOTE: To update team member composition after submission, email mail@radion.build with:

• Team name
• Your name and email
• New member's name and email

01 — Basic Information

Full Name * (min 4 chars)

Email *

Phone (with country code)

Country *

University / Company *

Team Location * (one location per team)

02 — Team Information

Team Name * (min 4 chars, unique)

Team Members (Optional) — Max 3 additional members

03 — Hackathon Intent

Selected Track *

Project Idea Summary *

04-07 — Pre-Qualification Challenge

Section A — Idea Genesis (20%)

0 / 250 words

What is the best idea you've ever had? It can be technical or non-technical. Explain: (1) What problem it addressed, (2) Why existing solutions were insufficient, (3) What was non-obvious about your approach.

Section B — Contrarian Thought (20%)

0 / 200 words

State one contrarian belief you hold that you believe is true, but most smart people disagree with or haven't seriously considered. Then answer: (1) Why do most people believe the opposite? (2) Why do you think they're wrong? (3) What evidence or reasoning would change your mind? Note: Must be falsifiable.

Section C — Deep Technical Explanation (40%)

0 / 600 words

Explain one thing deeply. It can be a system, algorithm, phenomenon, or design decision you disagree with. Choose one thing and go deep. Requirements: Assume your reader is technically competent, start from first principles, and include tradeoffs, failure modes, and alternatives.

Section D — Engineering Judgment Under Constraint (20%)