Task: Program Execution
Input (English): 10, 11, ['913', 'z', '2821', '181', '2303', '3739', 'T', '7297', 'X', 'Z', '2169', '845', '8391', 'Y', '4639', '8493', '3929', '9819', '6537', 'r', 'G']
Output (English): 2169Z