Task: Program Execution
Input (English): 6, 6, ['A', 'M', 'F', 'X', 'a', 'A', 'C', '487', 't', 'W', 'C', '6609', '4961', 'L', 'H', '241', 'i', '5175', '1289', '8597', '4567', '9687', 'T']
Output (English): A