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)

'''
7
5
6
4
9
6
2
10
100
3
2
1
4
3
'''