#include <iostream>
using namespace std;

int main(){
	int n;
	while(cin >> n){
		
		if(n==0){
			cout << 0 << endl;
			continue;
		}
		
		string s="";
		
		while(n>0){
			s = char(n%2 + '0') + s;
			n /=2;
		}
		
		cout << s << endl;
	}
	return 0;
}