#include <iostream>

using namespace std;

int main()
{
    int l, r;
    cin >> l >> r;
    int pomosna_l = l;
    int ok = 1;
    while(l > 0)
    {
        int cifra = l % 10;
        if(cifra == 0)
        {
            ok = 0;
            break;
        }
        if (pomosna_l % cifra != 0)
        {
            ok = 0;
        }
        l /= 10;
    
    }
    if (ok == 0)
    {
        cout << "NE E ZIMSONOV" << endl;
    }
    else {cout << "ZIMSONOV" << endl;}
    return 0;
}