Task: Program Execution
Input (English): 18, 21, ['f', 'z', '8979', 'c', '3577', '9177', '1169', 'X', '1513', '6751', 'b', 'F', 'Y', '7751', 'l', 'R', '8083', '2479', '5597', '5583', 'H', '6927']
Output (English): H558355972479