Task: Program Execution
Input (English): 23, 23, ['r', '2357', 'O', 'C', '7173', 'T', '5173', '9941', 'A', '9279', '8327', '9943', 'W', 'Q', '7127', '3181', '5117', 'v', 'n', '6383', '1281', '2213', 'x', 'S', 'i', 'h']
Output (English): x