#include<iostream>
using namespace std;
#define int long long
signed main()
{
    int n;

    int idx;
    while(cin>>n)
    {
        if(n==0)
        {
            cout<<0<<endl;
            continue;
        }
        int t = n;
        int a[100];
        idx = 0;
        while(t>0)
        {
            a[idx++] = t % 2;
            t /= 2;
        }
        for(int i=idx-1;i>=0;i--) cout<<a[i];
        cout<<endl;
    }
    return 0;
}