Task: Program Execution
Input (English): 10, 21, ['F', '9123', 'Y', '3669', '2401', '1091', '3429', '5955', 'p', 'u', 'O', '627', 'K', '9221', '5437', 'f', '531', 'x', '2717', 'B', '897', 'r', 'Q', 'j', '6745']
Output (English): uO627K92215437f531x2717B897