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

signed main() {
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int t = 1;
    //cin >> t;
    while(t--) {
        int n, m;
        cin >> n >> m;
        vector<int> a(n), b(m);
        int amin = INT_MAX, aminind;
        for(int i = 0; i < n; i++) {
            cin >> a[i];
            if (amin > a[i]) {
                amin = a[i];
                aminind = i;
            }
        }

        for(int i = 0; i < m; i++) {
            cin >> b[i];
        }

        for(int i = 0; i < m; i++) {
            if (b[i] >= amin) {
                cout << "NEM\n";
                cout << aminind+1 << '\n' << i+1 << '\n';
                return 0;
            }
        }

        cout << "IGEN\n";


    }

    return 0;
}