#include <iostream>
#include <string>

using namespace std;

void Number_to_Binary(int number) {
	if (number == 0) {
		return;
	}
	else
	{
		if (number % 2 == 0) 
		{
			Number_to_Binary(number / 2);
			cout << "0";
		}	
		else
		{
			Number_to_Binary(number / 2);
			cout << "1";
		}
	}
}

int main()
{
	unsigned int n;
	cin >> n;
	Number_to_Binary(n);
}