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

int main()
{
    ll n, m; cin >> n >> m;
    vector<ll> me(n+1), opp(m+1);
    ll mmin = 10e10, mind = -1, omax = 0, oind = -1;
    for (ll i = 1; i <= n; i++){
        cin >> me[i];
        if (mmin > me[i]){
            mmin = me[i]; mind = i;
        }
    }
    for (ll i = 1; i <= m; i++){
        cin >> opp[i];
        if (omax < opp[i]){
            omax = opp[i]; oind = i;
        }
    }
    if (mmin > omax){
        cout << "IGEN";
    }
    else {
        cout << "NEM" << "\n";
        cout << mind << "\n";
        cout << oind << "\n";
    }
    return 0;
}