#include <fstream>
using namespace std;
class InputReader {
    public:
        InputReader() {}
        InputReader(const char *file_name) {
            input_file = fopen(file_name, "r");
            cursor = 0;
            fread(buffer, SIZE, 1, input_file);
        }
        inline InputReader &operator >>(int &n) {
            while((buffer[cursor] < '0' || buffer[cursor] > '9')&&buffer[cursor]!='-') {
                advance();
            }
            n =0;
            semn= 1;
            if(buffer[cursor]=='-') semn=-1,advance();
            while('0' <= buffer[cursor] && buffer[cursor] <= '9') {
                n = n * 10 + buffer[cursor] - '0';
                advance();
            }
            n*=semn;
            return *this;
        }
    private:
        FILE *input_file;
        static const int SIZE = 1 << 17;
        int cursor,semn;
        char buffer[SIZE];
        inline void advance() {
            ++ cursor;
            if(cursor == SIZE) {
                cursor = 0;
                fread(buffer, SIZE, 1, input_file);
            }
        }
}f("twoton.in");
ofstream g("twoton.out");
int n,i,S=1,a[1<<17];
int main()
{
  f>>n;
  for(i=0;i<n;++i) f>>a[i];
  for(i=n-2;i>=0;--i)
      if(a[i]>=a[i+1])
      {
          a[i]=a[i+1];
          S=(2*S+1)%19997;
      }
      else S++;
  g<<S%19997;
}