Task: Program Execution
Input (English): S 3153 L U 9051 9141 z k v c x R L w 2649 4807 25 3831 513 6467 5769 7499 2383 6421 N q 7763 1919 6341 5443 7229 9297 A a I 8923 a 9617 8925
Output (English): 17