Task: Program Execution
Input (English): 21, 29, ['U', 'p', 's', 'q', 'J', '8545', '8509', '7371', '9265', '7585', 'J', 'P', 'Z', '6521', 'K', 'b', 'M', '2973', '515', 'a', '8115', '2019', 'O', '4877', '223', '993', '4045', '5045', 'O']
Output (English): O504540459932234877O20198115