n = int(input())
a = input().split()
b = input().split()
av1 = 0
av2 = 0
su1 = 0
su2 = 0
s1 = 0
s2 = 0
l1 = []
l2 = []
for v in a:
    l1.append(int(v))
for v in b:
    l2.append(int(v))
for i in range(0, n):
    su1 += l1[i]
av1 = su1 / n
for i in range(0, n):
    su2 += l2[i]
av2 = su2 / n
for i in range(0, n):
    s1 += (l1[i] - av1) * (l1[i] - av1)
for i in range(0, n):
    s2 += (l2[i] - av2) * (l2[i] - av2)
if s1 < s2:
    print('jia')
if s1 > s2:
    print('yi')
/**************************************************************
	Problem: 1357
	User: admin
	Language: Python
	Result: Accepted
	Time:104 ms
	Memory:34480 kb
****************************************************************/