Task: Program Execution
Input (English): 2, ['z', 'y', '7117', 'n', '1827', '1749', '8813', 'i', 'B', 'O', '1691', 'M', '5049', 'B', 'E', '5229', '2501', '5983', 'c', '9081', '8227', '2021', '8765']
Output (English): z, y