Task: Program Execution
Input (English): 10, 16, ['5331', '2685', 'l', 'P', '7051', '7753', '5443', '2937', 'b', 'U', '2371', '2871', 'x', 'x', '4361', 'y', '5109', 'O', '6791', '9847', 'x']
Output (English): U, 2371, 2871, x, x, 4361, y