#include <iostream>
#include <fstream>
#include <random>

using namespace std;

int main(int argc, char* argv[])
{
  if ( argc != 2 )
  {
    cerr << "ERROR: File argument missing." << endl;
    return 1;
  }

  ofstream ofs(argv[1]);

  if ( ! ofs )
  {
    cerr << "ERROR: File could not be opened." << endl;
    return 1;
  }

  random_device r;
  uniform_int_distribution<char> d(' ', '~'); // 32 - 126
  
  char c;
  while ( cin.get(c) )
  {
    ofs << c;
    c = d(r);
    ofs << c;

    for (int i = 0; i < c; ++i)
      ofs << d(r);
    
  }
  ofs.close();
  
  return 0;
}