#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;

int n;

int main()
{
    while(cin>>n)
    {
        vector<int> nums;
        while(n)
        {
            nums.push_back(n%2);
            n/=2;
        }
        reverse(nums.begin(),nums.end());
        for(auto p:nums)
        cout<<p;
        puts("");
    }
    return 0;
}