#include <iostream>

using namespace std;
#define dim 1001
struct Stiva
{
    int st[dim];
    int top;
    int Empty()
    {
        return top == -1;
    }
    int Full()
    {
        return top == dim-1;
    }
    void Init()
    {
        top = -1;
    }
    void Push(int x)
    {
        if (!Full())
            st[++top]=x;
    }
    void Pop()
    {
        if (!Empty()) top--;
    }
    int Front()
    {
        return st[top];
    }
};
int main()
{
    int n;
    Stiva s;
    cout<<"n= ";
    cin>>n;
    s.Init();
    while(n>0)
    {
        s.Push(n%2);
        n/=2;
    }
    while(!s.Empty())
    {
        cout<<s.Front();
        s.Pop();
    }
}