s = input().split()
m = int(s[0])
n = int(s[1])
c = 0
for i in range(m, n + 1):
    b = i // 100 % 10
    s = i // 10 % 10
    g = i // 1 % 10
    if b == g:
        print(i)
        c += 1
print(c)

/**************************************************************
	Problem: 1742
	User: admin
	Language: Python
	Result: Accepted
	Time:117 ms
	Memory:34480 kb
****************************************************************/