Task: Program Execution
Input (English): 12, 13, ['7105', '4307', '7097', '7557', 'b', 'l', '6555', 'M', 'P', 'x', 'P', '9507', 'N', 'j', '5787', '859', 'C', '8443', '4907']
Output (English): 9507