def kaprekarNumbers(p, q):
    flag = 0
    
    for i in range(p, q+1):
        d = 0
        temp = i
        
        while (temp > 0):
            d += 1
            temp = temp//10
        
        square = i*i
        
        if (square//pow(10, d) + square % pow(10, d) == i):
            flag = 1
            print(i, end=" ")
    
    if (flag == 0):
        print("INVALID RANGE")

p = int(input())
q = int(input())

kaprekarNumbers(p, q)