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

using namespace std;

double min_element(const vector<double> & v){
  // no explicit iterator! We need only *(iterator)
  return *(min_element(v.begin(),v.end())); 
}
// calling routine is clean and simple:
int main()
{
  vector<double> v; 
  v.push_back(1.7); v.push_back(1.3);
  v.push_back(2.8); v.push_back(4.1);
  cout<<"minimum element = "<<min_element(v)<<endl;
  return 0;
}