{"id":"no-sqrt-dependency","text":"`is_perfect_square` satisfies the LeetCode constraint of not using any built-in square root or exponentiation function; it relies only on integer multiplication and comparison.","truth_value":"IN","source":"entries/2026/06/06/valid-perfect-square-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"no-sqrt-dependency","truth_value":"IN","reason":"premise"}]}}