Task: Program Execution
Input (English): 4, 4, ['I', '9913', 'F', 'J', '7141', '6903', '2195', 'r', '787', 'O', '2877', '9579', 'J', '5181', '2461', '5095', 'W', '3091', '9841', 'b', '153', 'E', '507', '8593', 'L']
Output (English): J