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0391-0300

391. Perfect Rectangle $\star\star\star$

392. Is Subsequence $\star$

393. UTF-8 Validation $\star\star$

394. Decode String $\star\star$

395. Longest Substring with At Least K Repeating Characters $\star\star$

396. Rotate Function $\star\star$

397. Integer Replacement $\star\star$

398. Random Pick Index $\star\star$

399. Evaluate Division $\star\star$

400. Nth Digit $\star\star$