Can I get just the counts from combinations_with_replacement ? about cppitertools HOT 1 OPEN

#include "cppitertools/combinations_with_replacement.hpp"

#include <iostream>
#include <vector>

int main() {
  const std::vector<int> v = {3, 7};
  for (auto &&ns : iter::combinations_with_replacement(v, 4)) {
    std::cout << "{ ";
    for (auto i : v) {
      std::cout << std::count(ns.begin(), ns.end(), i) << ' ';
    }
    std::cout << "}\n";
  }
}

#include "cppitertools/combinations_with_replacement.hpp"
#include "cppitertools/imap.hpp"

#include <iostream>
#include <vector>

int main() {
  const std::vector<int> v = {3, 7};

  auto counts = iter::imap([&v](auto&& ns) {
      return iter::imap([&ns](auto i) {
          return std::count(std::begin(ns), std::end(ns), i);
      }, v);
  }, iter::combinations_with_replacement(v, 4));

  // then to iterate over it and display
  for (auto&& c : counts) {
    std::cout << "{ ";
    for (auto i : c) {
      std::cout << i << ' ';
    }
    std::cout << "}\n";
  }
}