Task: Program Execution
Input (English): 4901, p, 883, 365, g, 8281, 4593, x, 4387, 4689, 2381, 8315, 9025, 2999, 9067, G, I, 3831
Output (English): 1, 3, 4, 6, 7, 9, 10, 11, 12, 13, 14, 15, 18