#include <iostream>
#include <climits>

using namespace std;

int main()
{
    int n;
    int m;
    cin>>n;
    cin>>m;
    int s[n];
    int e[m];
    int min=INT_MAX;
    int inde;
    for(int i=0;i<n;i++){
        cin>>s[i];
        if(s[i]<min){
                min=s[i];
                inde=i+1;
        }
    }
    int max=0;
    int in;
for(int i=0;i<m;i++){
    cin>>e[i];
    if(e[i]>max){
        in=i+1;
        max=e[i];
    }
}
  if(max>min || max==min){
    cout<<"NEM"<<endl;
    cout<<inde<<endl;
    cout<<in<<endl;
  }
  else
    cout<<"IGEN";
    return 0;
}