Task: Program Execution
Input (English): 21, 21, ['Z', '2443', 'A', '8297', 'b', '121', '373', 'E', 'v', '9291', 'x', '1567', 'e', 'g', '9987', '9029', '8799', 'X', '9339', 'K', 'l', 'R', '9215', 'z', 'f', 'z']
Output (English): 0