The Load-Balancing Bank

A bank has N tellers, each with their own queue. When a customer arrives, they join the queue with the fewest people. If multiple queues have the same minimum number of people, the customer chooses the one with the lowest index (e.g., Teller 1 before Teller 2). Given N and a list of customer names, output the final state of each teller's queue. Example: Input: 2 Alice Bob Charlie Dave Output: T1: Alice Charlie T2: Bob Dave Explanation: - Alice joins T1 (both empty). - Bob joins T2 (T1 has 1, T2 has 0). - Charlie joins T1 (both have 1, pick lowest index). - Dave joins T2 (T1 has 2, T2 has 1).