{"id":"prev-sentinel-assumes-positive","text":"`is_increasing_skip` initializes `prev = -1` as a sentinel, which is correct only because the problem guarantees `nums[i] >= 1` — this would silently break on inputs containing non-positive values.","truth_value":"IN","source":"entries/2026/06/06/remove-one-element-to-make-the-array-strictly-increasing-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"prev-sentinel-assumes-positive","truth_value":"IN","reason":"premise"}]}}