#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 ( ) ;
}
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