Task: Program Execution
Input (English): 9617, 3717, 6941, 6067, y, h, 2309, U, 4035, 1383, 3825, H, 7229, 9993, 1347, 3853, 2301, 7769, 2107, 647, 9863, U
Output (English): 1, 2, 3, 4, 7, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21