Task: Program Execution
Input (English): Y, 3055, w, 6753, 721, s, 7651, C, F, 8735, 1491, 4353, u, g, 1203, Q, 8171, t, S, 1513
Output (English): 2, 4, 5, 7, 10, 11, 12, 15, 17, 20