#include<iostream>
#include<cmath>
#include<algorithm>
#include<string>
#include<map>
using namespace std;
int main() {
	int n;
	while (cin >> n) {
		int arr[100], index = 0;
		while (n) {
			arr[index++] = n % 2;
			n /= 2;
		}
		for (int i = index - 1;i >= 0;i--) {
			cout << arr[i];
		}
		cout << endl;
	}
	return 0;
}