Task: Program Execution
Input (English): 15, 18, ['k', '9913', '7151', 'c', '8207', '147', '3579', '551', '2865', 'Z', 'J', '2095', '1763', '2511', 'P', '9953', '9723', '7941', '9453']
Output (English): 149732793599P