#include<bits/stdc++.h>
using namespace std;
int main(){
	long long s;
	long long n[10000],k = 0;
	cin >> s;
	while(s != 0)
	{
		 n[k++]= s % 2;
		 s /= 2;
		
	}
	for( int i = k - 1; i >= 0; i--)
	{
		cout << n[i];
	}
	return 0;
}

/**************************************************************
	Problem: 1108
	User: yangwanning
	Language: C++
	Result: Wrong Answer
****************************************************************/