Task: Program Execution
Input (English): 1, ['1607', '1881', '3479', 'O', 'b', 'd', 'D', 'm', '6941', 'T', '2493', 'Z', '3761', 'S', '2725', '4819', '4209', '2779', '3667', '5013', '6317']
Output (English): 1607