#include <iostream>
#include <vector>
using namespace std;

template <class T>
int foo(typename vector<T>::iterator begin, typename vector<T>::iterator end)
{
    return 0;
}

int main()
{
    vector<int> v;
    v.push_back(4);
    v.push_back(7);
    cout << foo(v.begin(), v.end()) << endl;
    return 0;
}