Task: Program Execution
Input (English): 9, 17, ['1837', 'I', 'R', '9255', 'j', 'R', '831', 'W', 'Y', 'q', 'w', '4657', 'W', '421', 'l', '5431', 'a', 'S', '9171', '1539', 'V', '2183', '965', '1291']
Output (English): Yqw4657W421l5431a