Task: Program Execution
Input (English): 7, 15, ['c', 'F', '6549', 'J', '2977', 'K', 'G', '8777', '3751', 'i', 'k', 'x', '4173', '1055', '2555', '6521', 'B', '1915', '2645', '6385', '5055']
Output (English): 555255013714xki15737778G