#include <iostream>

using namespace std;

int main()
{
int num,ans[100],i=0;
while(cin>>num)
{
while(num>0)
{
ans[i]=num%2;
num=num/2;
i++;
}
for(int j=i-1;j>=0;j--)
{
cout<<ans[j];
}
cout<<endl;
}
return 0;
}