Task: Program Execution
Input (English): 1545, 6181, c, 7965, e, O, 791, t, 8143, A, t, Y, 1885, b, 7879, 8733, 7467, 9339, 1887
Output (English): 1, 2, 4, 7, 9, 13, 15, 16, 17, 18, 19