Task: Program Execution
Input (English): R, 2503, 2729, l, B, D, 8609, 8035, 7263, O, 499, 7535, 553, 4859, j, 1767, 4153, 9031
Output (English): 18, 2503, 2729, 12, 2, 4, 8609, 8035, 7263, 15, 499, 7535, 553, 4859, 10, 1767, 4153, 9031