Task: Program Execution
Input (English): 4, 5, ['P', '7431', '8489', 'S', 'P', '5479', '2291', 'o', '8557', 'g', '9077', '2547', '2755', 'u', '4939', 'O', '465', '2279', 'O', 'V', '5223', '3543', 's', 't']
Output (English): PS