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Code Jam / Kick Start Analysis-First Clinic 01

Who This Is For

Use this clinic if:

  • you often reach the right family only after reading the full analysis
  • you can solve the small model in your head, but you do not promote it cleanly into the large version
  • your writeups keep saying "I should have seen the pattern earlier" without naming the first missing bridge

Entry Gate

Run this only if the relevant core families already feel like review.

Good repo-native starter anchors:

If these still feel like first exposure, go back to the corresponding topic and ladder first.

Clinic Goal

  • learn the analysis-first habit: write the small model, name the bottleneck, and state the promotion rule before polishing the final code

Starter Reps

Pick one of these per clinic run:

These are not Google archive problems, but they are good repo-native drills for the same escalation move:

  • naive or small model
  • bottleneck
  • promoted large solution

Running Rules

Step 1: Fill The Analysis Card Before Coding

Write this card first:

Item Your answer
smallest obviously-correct model
main bottleneck in that model
monotone / state / algebra clue
promoted family
exact reason the promoted family is sufficient

If the last two rows are vague, you are still too early to code.

Step 2: Separate Small From Large

Write one sentence for each:

  • what the small model proves
  • what the large data invalidates
  • what information survives the promotion

This is the key habit behind old small / large Google-style practice, even when the exact contest format no longer runs live.

Step 3: Name The Promotion Rule

Do not settle for "optimize the brute force."

State the exact bridge:

Step 4: Delay Final Code Until The Large Story Is Compact

Before you code, answer:

  • what is the exact state or predicate?
  • what is the exact transition or merge?
  • why is the final complexity safe?
  • which smallest case would still break this story?

If you cannot answer these in a few lines, reopen the topic page instead of forcing code.

Step 5: Use The Right Validation Loop

Allowed Refreshers

Success Criteria

  • you can explain the small -> large promotion in one clean paragraph
  • the first coded version already matches the promoted model instead of the brute-force model
  • your post-mortem identifies the first missing bridge, not just the final named algorithm

Failure Routing

Failure signal Go next
the topic family itself is still unstable the corresponding deep topic page and ladder
the statement never became a compact model Reasoning And Implementation Discipline
the model is fine, but numeric output still feels brittle Precision / Formatting Robustness Clinic 01
the answer is predicate-checked and local validation is noisy Special Judge / Output Protocol Workflow
the issue is implementation trust, not analysis Build Kit

After This Clinic

  • run one archived Google problem through the same analysis card using the coding-competitions-archive
  • then log the first broken bridge in your normal review notes

References And Repo Anchors

Research snapshot refreshed on 2026-04-25.

Official / primary:

Repo anchors: