#include <iostream>
#include <stack>
using namespace std;

int main() {
    int n;
    while (cin >> n) { 
        stack<int> sta;
        while(n)
        {            
            sta.push(n%2);
            n/=2;
        }
        while(!sta.empty())
        {
            cout<<sta.top();
            sta.pop();
        }
        cout<<endl;
        
    }
}