#include<bits/stdc++.h>
using namespace std;

int main()
{
    int  n, bin_arr[400], i=0;
    cin>>n;
    while (n>0)
    {
        
        bin_arr[i]=n%2;
        n=n/2;
        i++;
    }
    for (int j = i-1; j >= 0; j--)
    {
        cout<<bin_arr[j];
    }
    
    
}