Palindrome Warmup + Two-Task Worker Scheduling

QR onsite coding round: start with palindrome checks, then generate the smallest palindrome greater than K, then reason verbally about assigning 2n workers across two tasks to minimize total time. Requirements Reported sequence: Warm-up: determine whether a number is a palindrome. Given a number K, return the smallest palindrome number greater than K. Verbal algorithm question: given 2n workers and two tasks, arrange assignments to minimize total time. Notes The first two parts are concrete coding; the third was described without enough input details to pin down the exact objective, so clarify whether each worker has two task durations, whether each task needs n workers, and whether the objective is makespan or sum of completion times. For the next-palindrome task, mirror the left half, compare with K, and increment the middle / left half if the mirrored candidate is not greater. Edge cases: all 9s, even vs odd length, leading carry, and input already palindromic. Preparation Implement next-palindrome for strings so very large numbers do not overflow. Drill edge cases: 9, 99, 12932, 12321, 1991. Prepare a clarification-first answer for the worker scheduling follow-up before naming greedy or DP.