#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  int n,x;
  cin>>n;char c;
  while(n!=0){
  x=n%2;
  c=x+'0';
  s=c+s;n=n/2;
  }
  cout<<s;
}
/**************************************************************
	Problem: 1108
	User: zhangailin
	Language: C++
	Result: Wrong Answer
****************************************************************/