Task: Program Execution
Input (English): 21, 21, ['321', 'I', '4943', 'w', '7753', 'e', '6789', 'g', 'G', 'x', 'm', 'g', 'Q', '2199', '3643', '3055', 'v', 'u', '8743', 'H', '4643']
Output (English): 4643