#include<bits/stdc++.h> using namespace std; int x; int a[23]; int main() { cin >>x; if(x==0) { cout <<0; return 0; } int n=0; while (x!=0) { a[n]=x%2; n++; x=x/2; } for(int i=n-1; i>=0; i--) { cout <<a[i]; } return 0; }