{"id":"merge-no-allocation","text":"`merge_two_lists` allocates exactly one `ListNode` (the dummy sentinel); all output nodes are reused from the inputs via pointer rewiring.","truth_value":"IN","source":"entries/2026/06/06/merge-two-sorted-lists-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":["merge-paradigm-linear-via-pointer-advancement"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"merge-no-allocation","truth_value":"IN","reason":"premise"}]}}