Task: Program Execution
Input (English): 8219, I, 2161, s, 1853, k, 3529, r, O, x, t, R, 2719, 7655, n, 3381, A, 3081, 2757, 4761
Output (English): 1, 3, 5, 7, 13, 14, 16, 18, 19, 20