Task: Program Execution
Input (English): 9, 9, ['3147', '3615', '5405', 'o', 'o', 'M', 'W', 'v', '685', '7557', '3947', 'X', '1351', '7917', 'q', '4077', '9555', '5805', '4117', 'o']
Output (English): 685