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