#include <iostream>

using namespace std;

int main () {

  int n,p[10000],i;

  while(cin >> n){

  for (i = 0 ; n > 0 ; i++){

  p[i] = n % 2 ;

  n = n/2;

  }

  i--;

  while(i >= 0){

  cout << p[i];

  i = i - 1;

  }

  cout << endl;

  }

}