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

bool comp_incr(pair<int, int> a, pair<int, int> b) {
    return a.first < b.first;
}

bool comp_decr(pair<int, int> a, pair<int, int> b) {
    return a.first > b.first;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int n, m;

    cin >> n >> m;

    pair<int, int> own[100000];
    pair<int, int> op[100000];

    int curr;

    for(int i = 0; i < n; i++) {
        cin >> curr;
        own[i] = make_pair(curr, i);
    }

    for(int i = 0; i < m; i++) {
        cin >> curr;
        op[i] = make_pair(curr, i);
    }

    sort(own, own + n, comp_incr);
    sort(op, op + m, comp_decr);

    if (own[0].first > op[0].first) {
        cout << "IGEN" << endl;
    }
    else {
        cout << "NEM" << endl;
        cout << own[0].second + 1 << endl;
        cout << op[0].second + 1 << endl;
    }

}