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

using namespace std;

int main(int, char**) {
    vector<int> vec {1,2,3,4,5,6,7,8,9,0};
    auto beg = vec.begin();
    auto end = vec.end();

    copy(beg, end, ostream_iterator<int>(cout, " "));
    cout << vec.size() << endl;

    remove_if(beg, end, std::bind(std::greater<int>(), placeholders::_1, 5));
    copy(beg, end, ostream_iterator<int>(cout, " "));
    cout << vec.size() << endl;
    return 0;
}