# -*- coding: utf-8 -*-

def calcx12x(A):
    if A < 12:
        return 0
    strA = str(A)
    Alist =map(int, list(strA))
    N = len(Alist)
    tcnt = 0
    for i in range(1, N):
        cnt = 0
        tmp = str(Alist[i-1]) + str(Alist[i])
        Atop = "0"
        Abot = "0"
        for j in range(0, i-1):
            Atop += str(Alist[j])
        if int(tmp) == 12:
            for j in range(i+1, N):
                Abot += str(Alist[j])
            cnt = int(Atop) * 10 ** (N-i-1) + int(Abot) + 1
        elif int(tmp) < 12:
            cnt = int(Atop) * 10 ** (N-i-1)
        elif int(tmp) > 12:
            cnt = (int(Atop)+1) * 10 ** (N-i-1)
        tcnt += cnt
    return tcnt

def calc2xx1(A):
    strA = str(A)
    Alist =map(int, list(strA))
    N = len(Alist)
    if A == 2:
        return 1
        exit()
    cnt = "0"
    tot = 0
    if Alist[0] == 2:
        cnt += "1" * (N-2)
        cnt2 ="0"
        for i in range(1,N-1):
            cnt2 += str(Alist[i])
        intcnt2 = int(cnt2)
        if Alist[N-1] < 2:
            intcnt2 -= 1
        tot = int(cnt) + intcnt2 + 1
    elif Alist[0] < 2:
        if 2 < N:
            cnt += "1" * (N-2)
            tot = int(cnt)
    elif 2 < Alist[0]:
        cnt += "1" * (N-1)
        tot = int(cnt)
    if A < 2:
        tot = 0
    else:
        tot = tot + 1
    return tot


A, B = map(int, raw_input().split())
AAA = calcx12x(B) - calcx12x(A-1)
BBB = calc2xx1(B) - calc2xx1(A-1)
strA = str(A-1)
Alist =map(int, list(strA))
strB = str(A)
Blist =map(int, list(strB))
if Alist[len(Alist)-1] == 1 and Blist[0] == 2:
    print AAA + BBB - 1
else:
    print AAA + BBB