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

using namespace std;

string getLabeledPointsString(const string delimiter) {
    vector<int> x ;
    stringstream  s;
    copy(x.begin(),x.end(), ostream_iterator<int>(s,delimiter.c_str()));
    return s.str();
}