#include <iostream>
#include <cstdlib>
#include <boost/filesystem.hpp>

using namespace std;
int main() {
  boost::filesystem::path keyStorePath;
  if (std::getenv("HOME") != nullptr) {
    keyStorePath = boost::filesystem::path(std::getenv("HOME")) / ".ndn";
  } else {
    keyStorePath = boost::filesystem::current_path() / ".ndn";
  }
  cout << keyStorePath.string() << endl;
  return 0;
}