#include <bits/stdc++.h>
    using namespace std;
    string bin(long long n)
    {
        string s;
        while(n)
        {
            if(n%2==1)
                s.push_back('1');
            else
                s.push_back('0');
            n=n/2;
        }
        return s;
    }
    int main()
    {
        std::ios_base::sync_with_stdio(NULL);
        cin.tie(NULL);
        cout.tie(NULL);
        long long n;
        string k;
        cin>>n;
        k=bin(n);
        reverse(k.begin(),k.end());
        cout<<k;
        return 0;
    }

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