#include <bits/stdc++.h>
using namespace std;

int a[33];

int main() {
int n, t = 1;
cin >> n;
while (n != 0) {
a[t] = n % 2;
n /= 2;
t++;
}
if (t == 1) {
cout << 0;
return 0;
}
for (int i = 1; i < t; i++) {
cout << a[t - i];
}
return 0;
}
/**************************************************************
	Problem: 1108
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/