Task: Program Execution
Input (English): 7, 18, ['a', 'U', 'M', 'S', '9097', 'O', '1717', '8911', '8069', '9665', 'c', '3459', 'n', '8407', 'm', '8113', 'z', '8333', '7991', '6739', 'N', 'l', 'q', '2357']
Output (English): 1717891180699665c3459n8407m8113z8333