Task: Program Execution
Input (English): O, c, 3727, 3305, Y, f, A, 521, 5743, W, 3477, 2101, 9571, 5577, 3473, u, d, 413, O, g
Output (English): 1, 2, 5, 6, 7, 10, 16, 17, 19, 20