Task: Program Execution
Input (English): 5, 18, ['4217', 'B', '7021', 'p', '7881', 'q', '6733', 'u', '4725', 'g', 'Z', '9669', 'U', 'U', 'V', '4177', 'w', 'c', 'R', 'h', '1949', 'p', 'i']
Output (English): cw4177VUU9669Zg4725u6733q7881