Task: Program Execution
Input (English): 7, 18, ['669', '8861', '3045', '3013', '6449', '3433', 'N', 'k', 'Q', 'L', '7123', 'N', '6073', 'f', '5617', '1443', '9051', 'f', '4523', 'e', 'F']
Output (English): f905114435617f6073N7123LQkN