Task: Program Execution
Input (English): 15, 20, ['D', '9187', 'l', 'r', '7655', 'T', 'A', 'O', 'w', 'O', 'G', '6103', 'h', 'S', 'N', '781', 'N', '2803', 'x', 'V', 'O', 'e', 'f']
Output (English): N781N2803xV