Task: Program Execution
Input (English): 3, 14, ['3521', 'Z', 'v', '3603', 'l', 'Z', '4959', '9967', '6437', 'P', '2035', 'u', 'f', 'U', 'k', 'R', '4453']
Output (English): Ufu2035P643799674959Zl3603v