#include <iostream>
using namespace std;

int main ()
{
    int a;
    cin >> a;
    if (a > 0)
    {
        if (a > 9) cout << "BIG PLUS" << endl;
        else cout << "small plus" << endl;
    }
    else
    {
        if (a < -9) cout << "BIG -" << endl;
        else if (a < 0) cout << "small -" << endl;
        else cout << "z-e-r-o" << endl;
    };
    return 0;
}