#include<bits/stdc++.h> using namespace std; int a[32]; int main() { int x; cin>>x; if(x==0){ cout<<"0"<<endl; 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; }