#include <iostream>
#include <string>
#include <vector>
#include <iterator>
#include <sstream>
#include <algorithm>
 
int main()
{
   const std::string s = "1 12 23";
   std::vector<int> v;
   std::istringstream iss(s);
   std::transform(std::istream_iterator<std::string>(iss),
   std::istream_iterator<std::string>(), std::back_inserter(v), 
   [](const std::string& current)
   {
       return std::stoi(current);
   });
   std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, "\n"));
}

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