#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: linmiaoling
	Language: C++
	Result: Wrong Answer
****************************************************************/