#include<bits/stdc++.h> using namespace std; int x; int a[32]; int main() { int n=0; cin>>x; if(x==0){ cout<<"0"; return 0; } while(x!=0){ int y=x%2; a[n]=y; n++; x/=2; } for(int i=n-1;i>=0;i--){ cout<<a[i]; } return 0; }