Task: Program Execution
Input (English): 8041, 1777, u, 4391, q, 5907, w, u, 3219, f, 529, 5409, 5717, 3211, 6319, I, 3691, 7301, f, 5761, h, c
Output (English): 1, 2, 4, 6, 9, 11, 12, 13, 14, 15, 17, 18, 20