Task: Program Execution
Input (English): 13, 15, ['503', 'P', '1439', '5157', '9657', '4349', '8573', '9805', '9755', 'Z', 'y', '6867', '8505', 'H', 'L', 'R', 'N', '2713', '5277', '6575', 'P', 'f', '3201']
Output (English): 8505HL