Task: Program Execution
Input (English): 5707, r, 4365, 8341, l, 2741, 7907, 2401, Y, C, 7963, 1605, 6275, S, k, 8457, 9333, v, e
Output (English): 1, 3, 4, 6, 7, 8, 11, 12, 13, 16, 17