Task: Program Execution
Input (English): D, x, 6607, 9453, V, 6855, N, 7011, 9295, 1973, K, 6491, P, 5339, q, 2101, Q, y, 629, I
Output (English): 1, 2, 5, 7, 11, 13, 15, 17, 18, 20