Task: Program Execution
Input (English): r 4649 x L n o r 8621 1973 K 251 h 9973 c 905 n 7091 7125 w 781 7377 P D 207 U 8387 U 4635 1691 8935 2819 1799 975 5399 2311 I 9657 E 2231
Output (English): 17