#include <bits/stdc++.h>
using namespace std;
 
int main()
{
int n,a[50],c;
while(cin>>n){
c=0;
while(n>0){
a[c]=n%2;
c++;
n/=2;
}
for(int i=c-1; i>=0; i--) cout<<a[i];
cout<<endl;
}
 
}