#include <stl.h>
#include <iostream.h>

bool values_squared (int a_, int b_)
{
  return (a_ * a_ == b_);
}

int main ()
{
  vector <int> v1 (10);
  vector <int> v2 (10);
  for (int i = 0; i < v1.size (); i++)
  {
    v1[i] = i;
    v2[i] = i * i;
  }
  if (equal (v1.begin (), v1.end (), v2.begin (), values_squared))
    cout << "v2[i] == v1[i] * v1[i]" << endl;
  else
    cout << "v2[i] != v1[i] * v1[i]" << endl;
  return 0;
}