Task: Program Execution
Input (English): 1, ['M', '6463', 'C', '4935', '5507', '9927', '7597', 'B', '105', '7179', 'N', '7377', 'P', '4115', 'Y', '2343', '1865', 'Y', 'J', '1095', 'r', 'E', '893', 'W', 'U', 'H', 'A', 'Z', '2947', '4687']
Output (English): M