{"id":"path-sum-null-always-false","text":"`hasPathSum(None, targetSum)` returns `False` for any `targetSum` including 0 — an empty tree has no paths.","truth_value":"IN","source":"entries/2026/06/06/path-sum-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"path-sum-null-always-false","truth_value":"IN","reason":"premise"}]}}