// Programmieren 1, Praktikum 1, Aufgabe 1
// Sven Eisenhauer
// 27.10.2004

#include <iostream>
using std::cout;
using std::endl;

int main()
{
   int number = 7;

   cout << number%2;
   number = number/2;
   cout << number%2;
   number = number/2;
   cout << number%2;
   number = number/2;

   cout << endl;

   return 0;
}