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Cumulative source-code acceptance

Master cumulative delivery acceptance

Pass this private suite to enter Master at 420 skill.

What you need to build

Build a bounded, deterministic program combining the complete prior tree, including diagnostics-aware source, register-VM constraints, capsules, testing, and delivery reasoning.

Define master-report with these inputs:

ArgumentJIK typeMeaning
itemsvector of integersPrivate delivery fixture.

Expected result

Return [count sum checksum], where checksum is the left fold of (acc*31)+item.

Python-like pseudocode

def master_report(items):
    total = 0
    checksum = 0
    for item in items:
        total += item
        checksum = checksum * 31 + item
    return [len(items), total, checksum]

The private suite checks returned values in 3 cases. Private inputs and expected values are never sent to the browser. Covered language features are recommended implementation tools; the evaluator does not inspect source structure.

5 failed retries remain. Preview never consumes one.