Task: Program Execution
Input (English): 7, 21, ['Y', 'R', 'F', 'a', 'y', 'j', 'k', 'R', '2417', '5831', 'a', 'W', '9349', '5931', 'U', 'C', '3', '9409', 'e', '213', '7539', '6927', '9795', '8455', '6013', '5885', 'g', '9757']
Output (English): 7539213e94093CU59319349Wa58312417Rk