Task: Program Execution
Input (English): 1677, c, 3605, 2739, 2923, q, F, 4219, 3977, 8563, 1687, 2901, 889, 7935, 5405, 5775, 8211, C, C, 4911, 8397
Output (English): 1, 3, 4, 5, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21