#include <iostream>
#include <vector>
#include <iterator>

int main()
{
   std::vector<int> Arr;
   for(int i=0;i<10;++i)
      Arr.push_back(i);
   std::vector<int>::iterator It=Arr.begin();
   It+=9;
   std::advance(It, -4);
   std::cout<< *It <<'\n';
   return 0;
}