#判断数字是否7位数,传入的n默认是整数
def checkNumSeven(n):
    return len(str(n)) == 7;

# 判断数字是否不相同,传入的n默认是整数
def checkDifference(n):
    n = str(n)
    s = set(n)
    return len(n) == len(s); 

x ,y = map(int,input().split())
for i in range(x,y + 1):
   if checkNumSeven(i * i) and checkDifference(i * i):
       print(i)
/**************************************************************
	Problem: 1118
	User: admin
	Language: Python
	Result: Accepted
	Time:93 ms
	Memory:34480 kb
****************************************************************/