#include<bits/stdc++.h> using namespace std; int a[1000]; int main(){ int m; cin>>m; if(m==0) cout<<"0"; else{ int n=1; while(m!=0){ a[n]=m%2; m/=2; n++; } for(int i=n-1;i>0;i--) cout<<a[i]; } return 0; }