Task: Program Execution
Input (English): 7571, H, 3825, 4795, s, 7115, p, j, 8923, 3387, l, 7489, r, 877, Y, 5439, 2101, 8649
Output (English): 1, 3, 4, 6, 9, 10, 12, 14, 16, 17, 18