#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    int x;
    cin >> x;
    
    int dig[1000];
    int n;     // numero de digitos de x
    n= 0;
    
    while (x!=0)
       {
        dig[n]= x%2;
        x= x/2;        
        n= n+1;        
       }
    
    while (n>0)
       {
        n= n-1;
        cout << dig[n];
       }
    
    cout << endl;
    
    system("PAUSE");
    return EXIT_SUCCESS;
}