#include<iostream>
using namespace std;
void rjz(int r){
    if(r==0){
        return ;
    }
    rjz(r/2);
    cout<<r%2;
}
int main(){
    int r;
    cin>>r;
    if(r==0){
        cout<<0;
    }
    rjz(r);
    return 0;
}