Task: Program Execution
Input (English): 18, 18, ['5639', '9235', 'O', 'o', '2349', 'C', '4887', '6013', 'K', '6455', 'D', '8311', 'f', '4119', '5181', '5339', 't', 'o', '2743', '4671', '5117', '2691', 'F', '7389']
Output (English): o