Task: Program Execution
Input (English): 1591, 8181, 1501, 8205, U, R, 9891, 5715, d, 1829, 6735, 4431, 6693, T, 4705, 239, 9125, J, 3691, 3687, c, 6251, u, 4845
Output (English): 5, 6, 9, 14, 18, 21, 23