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During today’s contest solution discussion, we tested ChatGPT o3-mini-high on our contest problems. And get this: it solved problems C and D! It claimed that it did it without internet access.

We asked about its capability, and it said that if it made a Codeforces account, its rating would be 3500–4000! I don’t know if AI has learned to solve very hard problems or if it’s getting overconfident.

All I can say is, things are getting pretty SCARY. I have no idea what’s going to happen with CP contests and competitive programmers soon.

2059A — Milya and Two Arrays

2059B — Cost of the Array

2059C — Customer Service

GPT o3-mini-high Solved C

2059D — Graph and Graph

GPT o3-mini-high Solved D

Asking ChatGPT if it is Cheating (Has Internet Access)

o3 claiming that it has rating 3500 on Codeforces!

Trying to Solve E2 with o2 — Not Successful

P.S. Seems like rank 4000+ should be called GPT soon.