Task: Program Execution
Input (English): 4, 9, ['r', '9073', '7803', 'z', '1009', '565', '8627', '6055', 's', '2569', '9355', '8273', 'C', '4631', 'B', 'Q', 'W', '2189', '467', 'k', '3953', 'Y', 'H', 'r', '6639']
Output (English): s550672685659001z