#include <bits/stdc++.h>
using namespace std;
#define ll  long long

int main()
{
    int n, m; cin >> n >> m;
    int mini = pow(10,9) + 1;
    int minii = 0;
    int maxi = 0;
    int maxii = 0;
    for(int i = 1; i <= n; i++)
    {
        int radar; cin >> radar;
        if(mini > radar)
        {
            mini = radar;
            minii  = i;
        }
    }
    for(int i = 1; i <= m; i++)
    {
        int radar; cin >> radar;
        if(maxi < radar)
        {
            maxi = radar;
            maxii  = i;
        }
    }
    if(mini <= maxi){
        cout << "NEM" << endl;
        cout << minii << endl << maxii;
    }
    else cout << "IGEN";
    return 0;
}