Task: Program Execution
Input (English): 7, 10, ['x', 'x', 'Y', '3111', '443', '6323', '3625', '2697', 'b', 'c', 'f', 'd', '3309', '6905', 'U', '333', 'H', 'o', 'c', 'B']
Output (English): cb26973625