Task: Program Execution
Input (English): I, C, r, 5733, E, Q, a, 7585, 8463, 2079, 3131, 585, 9513, 2449, 871, 6115, V, x, 1891, I, 7477, 4883, 469
Output (English): 1, 2, 3, 5, 6, 7, 17, 18, 20