Task: Program Execution
Input (English): 14, 20, ['9351', 'U', 'l', 'f', '9523', 'S', 'c', 't', '6821', '1849', '8317', '3247', 'q', 'I', 'Z', 'C', 'x', 'x', '2043', '9145']
Output (English): IZCxx20439145