June Contest. New solutions, exclusive merch

Full version, June 8. A point is awarded for a solved problem — not for an edit, not for a language version. One Savchenko problem is one unit, regardless of how many times you edit it or in how many languages.

1. Credit unit
   The credit unit is the (problem, author) pair. The first publication of a complete solution earns points once. All subsequent edits to the same problem by the same author add no further points.
2. Base point
   The first complete solution to a problem — derivation and reasoning in LaTeX — earns 1.0 point.
3. Multipliers
   Stack multiplicatively (see table below). Example: an English-language first solution for a previously unsolved problem in chapter 12 gives 1.0 × 1.5 × 1.5 × 1.5 = 3.375 points. Awarded once, at first publication by this author.
4. Translating your own solution
   If you already published a solution for a problem and earned points, translating it to another language earns +0.5 points. No multipliers apply. One self-translation per problem — 0.5 points, once.
5. Why translation is 0.5, not 1.5
   Solving a problem in English from scratch creates new content — that earns ×1.5. Translating your own existing solution adds a language version, not a new derivation. It is real work — hence 0.5 — but not equal to the original derivation — hence not 1.5.
6. Translating someone else's solution
   Not credited. Zero points.
7. Problem already solved by another author
   Your alternative solution earns the base 1.0 points, without the unsolved-problem multiplier — the problem was already covered. Alternative solutions are welcome.
8. Solutions published before the contest
   Problems solved before June 1 are not counted. However, if you translate your own pre-contest solution to another language during the contest, that earns 0.5 points under rule 4.
9. Incomplete solutions
   A solution without derivation or reasoning, or consisting only of a final answer, is not credited. Publish a draft and complete the derivation — it will be credited on the next review.
10. Review
    Solutions are spot-checked for compliance — especially translations (rule 4) and derivation quality (rule 9). Non-compliant solutions are removed from the score.

Applied to the base point, stack multiplicatively. Only apply at the first publication of a problem by this author.