Task: Program Execution
Input (English): 20, 20, ['4177', '5609', 'm', 'j', '6817', '439', 'y', 'G', 'x', 'z', '2947', 'o', '3343', 't', 'n', 'Q', 'R', '4797', 'l', 'r', '259']
Output (English): r