Task: Program Execution
Input (English): 2915, 107, f, 4037, b, k, 7997, P, 7793, E, B, 2607, o, 2315, h, L, 2459, 9703, 1489, e, p
Output (English): 1, 2, 4, 7, 9, 12, 14, 17, 18, 19