hdoj：2051

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

void toBit(int n)
{
    vector<int> vec;
    while (n > )
    {
        if (n %  == )
        {
            vec.push_back();
        }
        else
        {
            vec.push_back();
        }
        n /= ;
    }
    for (int i = vec.size() - ; i >= ; i--)
    {
        cout << vec[i];
    }
    cout << endl;

}

int main()
{
    int n;
    while (cin >> n)
    {
        toBit(n);
    }
}