def main():
    n=int(input())
    m=int(input())
    A=[]; B=[]; E=True
    for i in range(n):
        A.append(int(input()))
    for i in range(m):
        B.append(int(input()))
    HminErt=min(A); HminHely=A.index(min(A))+1
    EmaxErt=max(B);EmaxHely=B.index(max(B))+1
    if HminErt>EmaxErt: print('IGEN')
    else:
        print('NEM')
        print(HminHely)
        print(EmaxHely)
main()
'''
7
5
6
4
9
6
2
10
100
3
2
1
4
3
'''