{"id":"range-bounds-inclusive","text":"In `range_sum_bst`, both `low` and `high` are included in the sum because the pruning comparisons use strict `<` and `>`, so nodes equal to either bound fall into the in-range branch","truth_value":"IN","source":"entries/2026/06/06/range-sum-of-bst-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"range-bounds-inclusive","truth_value":"IN","reason":"premise"}]}}