Task: Program Execution
Input (English): 4, 5, ['R', '2453', '6703', 'R', 'o', 'I', '4087', 'A', 'x', 's', 'j', 'G', 'C', '5039', '1487', '4929', '7619', '1999', 'M', 'z', '2445', 'N', '373', 'J', 'u', 's']
Output (English): Ro