Task: Program Execution
Input (English): 7, 12, ['3713', 'N', '7191', '73', '4595', '6537', 'H', 'v', 'H', '8531', 'k', 'H', 's', 'x', 'R', 'd', '507', 'C', '9649', '8875', '7931']
Output (English): 8531