#include <stl.h>
#include <iostream.h>
int main ()
{
vector <int> numbers(100);
for (int i = 0; i < 100; i++)
numbers[i] = i % 3;
int elements = 0;
count (numbers.begin (), numbers.end (), 2, elements);
cout << "Found " << elements << " 2's." << endl;
return 0;
}