#include <iostream>
// skibidi alfa sigma rizzler
using namespace std;

int main()
{
    int  n,m,max=0,min=1000000001, bekeres, mins, maxs;
    cin >>n>>m;
    for(int i=0; i<n; i++){
        cin >> bekeres;
        if(bekeres <min){
            min = bekeres;
            mins = i;
        }
    }
    for(int i=0; i<m; i++){
        cin >> bekeres;
        if(bekeres>max){
            max = bekeres;
            maxs = i;
        }
    }
    if(min <= max){
        cout << "NEM \n"<< mins+1 << endl<< maxs+1;
    }else
    cout << "IGEN";
    return 0;
}