#include<bits/stdc++.h>
using namespace std;
bool luck(int s)
{
	if(s==10)return 1;
	else if(s==102)return 1;
	else if(s==120)return 1;
	else if(s==201)return 1;
	else if(s==210)return 1;
	else if(s==1023)return 1;
	else if(s==1032)return 1;
	else if(s==1203)return 1;
	else if(s==1230)return 1;
	else if(s==1302)return 1;
	else if(s==1320)return 1;
	else if(s==2013)return 1;
	else if(s==2031)return 1;
	else if(s==2103)return 1;
	else if(s==2130)return 1;
	else if(s==2301)return 1;
	else if(s==2310)return 1;
	else if(s==3012)return 1;
	else if(s==3021)return 1;
	else if(s==3102)return 1;
	else if(s==3120)return 1;
	else if(s==3201)return 1;
	else if(s==3210)return 1;
	else if(s==10234)return 1;
	else if(s==10243)return 1;
	else if(s==10324)return 1;
	else if(s==10342)return 1;
	else if(s==10423)return 1;
	else if(s==10432)return 1;
	else if(s==12034)return 1;
	else if(s==12043)return 1;
	else if(s==12304)return 1;
	else if(s==12340)return 1;
	else if(s==12403)return 1;
	else if(s==12430)return 1;
	else if(s==13024)return 1;
	else if(s==13042)return 1;
	else if(s==13204)return 1;
	else if(s==13240)return 1;
	else if(s==13402)return 1;
	else if(s==13420)return 1;
	else if(s==14023)return 1;
	else if(s==14032)return 1;
	else if(s==14203)return 1;
	else if(s==14230)return 1;
	else if(s==14302)return 1;
	else if(s==14320)return 1;
	else if(s==20134)return 1;
	else if(s==20143)return 1;
	else if(s==20314)return 1;
	else if(s==20341)return 1;
	else if(s==20413)return 1;
	else if(s==20431)return 1;
	else if(s==21034)return 1;
	else if(s==21043)return 1;
	else if(s==21304)return 1;
	else if(s==21340)return 1;
	else if(s==21403)return 1;
	else if(s==21430)return 1;
	else if(s==23014)return 1;
	else if(s==23041)return 1;
	else if(s==23104)return 1;
	else if(s==23140)return 1;
	else if(s==23401)return 1;
	else if(s==23410)return 1;
	else if(s==24013)return 1;
	else if(s==24031)return 1;
	else if(s==24103)return 1;
	else if(s==24130)return 1;
	else if(s==24301)return 1;
	else if(s==24310)return 1;
	else if(s==30124)return 1;
	else if(s==30142)return 1;
	else if(s==30214)return 1;
	else if(s==30241)return 1;
	else if(s==30412)return 1;
	else if(s==30421)return 1;
	else if(s==31024)return 1;
	else if(s==31042)return 1;
	else if(s==31204)return 1;
	else if(s==31240)return 1;
	else if(s==31402)return 1;
	else if(s==31420)return 1;
	else if(s==32014)return 1;
	else if(s==32041)return 1;
	else if(s==32104)return 1;
	else if(s==32140)return 1;
	else if(s==32401)return 1;
	else if(s==32410)return 1;
	else if(s==34012)return 1;
	else if(s==34021)return 1;
	else if(s==34102)return 1;
	else if(s==34120)return 1;
	else if(s==34201)return 1;
	else if(s==34210)return 1;
	else if(s==30124)return 1;
	else if(s==30142)return 1;
	else if(s==30214)return 1;
	else if(s==30241)return 1;
	else if(s==30412)return 1;
	else if(s==30421)return 1;
	else if(s==31024)return 1;
	else if(s==31042)return 1;
	else if(s==31204)return 1;
	else if(s==31240)return 1;
	else if(s==31402)return 1;
	else if(s==31420)return 1;
	else if(s==32014)return 1;
	else if(s==32041)return 1;
	else if(s==32104)return 1;
	else if(s==32140)return 1;
	else if(s==32401)return 1;
	else if(s==32410)return 1;
	else if(s==34012)return 1;
	else if(s==34021)return 1;
	else if(s==34102)return 1;
	else if(s==34120)return 1;
	else if(s==34201)return 1;
	else if(s==34210)return 1;//
	else if(s==40123)return 1;
	else if(s==40132)return 1;
	else if(s==40213)return 1;
	else if(s==40231)return 1;
	else if(s==40312)return 1;
	else if(s==40321)return 1;
	else if(s==41023)return 1;
	else if(s==41032)return 1;
	else if(s==41203)return 1;
	else if(s==41230)return 1;
	else if(s==41302)return 1;
	else if(s==41320)return 1;
	else if(s==42013)return 1;
	else if(s==42031)return 1;
	else if(s==42103)return 1;
	else if(s==42130)return 1;
	else if(s==42301)return 1;
	else if(s==42310)return 1;
	else if(s==43012)return 1;
	else if(s==43021)return 1;
	else if(s==43102)return 1;
	else if(s==43120)return 1;
	else if(s==43201)return 1;
	else if(s==43210)return 1;
	else if(s==40123)return 1;
	else if(s==40132)return 1;
	else if(s==40213)return 1;
	else if(s==40231)return 1;
	else if(s==40312)return 1;
	else if(s==40321)return 1;
	else if(s==41023)return 1;
	else if(s==41032)return 1;
	else if(s==41203)return 1;
	else if(s==41230)return 1;
	else if(s==41302)return 1;
	else if(s==41320)return 1;
	else if(s==42013)return 1;
	else if(s==42031)return 1;
	else if(s==42103)return 1;
	else if(s==42130)return 1;
	else if(s==42301)return 1;
	else if(s==42310)return 1;
	else if(s==43012)return 1;
	else if(s==43021)return 1;
	else if(s==43102)return 1;
	else if(s==43120)return 1;
	else if(s==43201)return 1;
	else if(s==43210)return 1;
	else if(s==102345)return 1;
	else if(s==102354)return 1;
	else if(s==102435)return 1;
	else if(s==102453)return 1;
	else if(s==102534)return 1;
	else if(s==102543)return 1;
	else if(s==103245)return 1;
	else if(s==103254)return 1;
	else if(s==103425)return 1;
	else if(s==103452)return 1;
	else if(s==103524)return 1;
	else if(s==103542)return 1;
	else if(s==104235)return 1;
	else if(s==104253)return 1;
	else if(s==104325)return 1;
	else if(s==104352)return 1;
	else if(s==104523)return 1;
	else if(s==104532)return 1;
	else if(s==105234)return 1;
	else if(s==105243)return 1;
	else if(s==105324)return 1;
	else if(s==105342)return 1;
	else if(s==105423)return 1;
	else if(s==105432)return 1;//
	else if(s==120345)return 1;
	else if(s==120354)return 1;
	else if(s==120435)return 1;
	else if(s==120453)return 1;
	else if(s==120534)return 1;
	else if(s==120543)return 1;
	else if(s==123045)return 1;
	else if(s==123054)return 1;
	else if(s==123405)return 1;
	else if(s==123450)return 1;
	else if(s==123504)return 1;
	else if(s==123540)return 1;
	else if(s==124035)return 1;
	else if(s==124053)return 1;
	else if(s==124305)return 1;
	else if(s==124350)return 1;
	else if(s==124503)return 1;
	else if(s==124530)return 1;
	else if(s==125034)return 1;
	else if(s==125043)return 1;
	else if(s==125304)return 1;
	else if(s==125340)return 1;
	else if(s==125403)return 1;
	else if(s==125430)return 1;
	else if(s==130245)return 1;
	else if(s==130254)return 1;
	else if(s==130425)return 1;
	else if(s==130452)return 1;
	else if(s==130524)return 1;
	else if(s==130542)return 1;
	else if(s==132045)return 1;
	else if(s==132054)return 1;
	else if(s==132405)return 1;
	else if(s==132450)return 1;
	else if(s==132504)return 1;
	else if(s==132540)return 1;
	else if(s==134025)return 1;
	else if(s==134052)return 1;
	else if(s==134205)return 1;
	else if(s==134250)return 1;
	else if(s==134502)return 1;
	else if(s==134520)return 1;
	else if(s==135024)return 1;
	else if(s==135042)return 1;
	else if(s==135204)return 1;
	else if(s==135240)return 1;
	else if(s==135402)return 1;
	else if(s==135420)return 1;
	else if(s==140235)return 1;
	else if(s==140253)return 1;
	else if(s==140325)return 1;
	else if(s==140352)return 1;
	else if(s==140523)return 1;
	else if(s==140532)return 1;
	else if(s==142035)return 1;
	else if(s==142053)return 1;
	else if(s==142305)return 1;
	else if(s==142350)return 1;
	else if(s==142503)return 1;
	else if(s==142530)return 1;
	else if(s==143025)return 1;
	else if(s==143052)return 1;
	else if(s==143205)return 1;
	else if(s==143250)return 1;
	else if(s==143502)return 1;
	else if(s==143520)return 1;
	else if(s==145023)return 1;
	else if(s==145032)return 1;
	else if(s==145203)return 1;
	else if(s==145230)return 1;
	else if(s==145302)return 1;
	else if(s==145320)return 1;
	else if(s==150234)return 1;
	else if(s==150243)return 1;
	else if(s==150324)return 1;
	else if(s==150342)return 1;
	else if(s==150423)return 1;
	else if(s==150432)return 1;
	else if(s==152034)return 1;
	else if(s==152043)return 1;
	else if(s==152304)return 1;
	else if(s==152340)return 1;
	else if(s==152403)return 1;
	else if(s==152430)return 1;
	else if(s==153024)return 1;
	else if(s==153042)return 1;
	else if(s==153204)return 1;
	else if(s==153240)return 1;
	else if(s==153402)return 1;
	else if(s==153420)return 1;
	else if(s==154023)return 1;
	else if(s==154032)return 1;
	else if(s==154203)return 1;
	else if(s==154230)return 1;
	else if(s==154302)return 1;
	else if(s==154320)return 1;//
	else if(s==201345)return 1;
	else if(s==201354)return 1;
	else if(s==201435)return 1;
	else if(s==201453)return 1;
	else if(s==201534)return 1;
	else if(s==201543)return 1;
	else if(s==203145)return 1;
	else if(s==203154)return 1;
	else if(s==203415)return 1;
	else if(s==203451)return 1;
	else if(s==203514)return 1;
	else if(s==203541)return 1;
	else if(s==204135)return 1;
	else if(s==204153)return 1;
	else if(s==204315)return 1;
	else if(s==204351)return 1;
	else if(s==204513)return 1;
	else if(s==204531)return 1;
	else if(s==205134)return 1;
	else if(s==205143)return 1;
	else if(s==205314)return 1;
	else if(s==205341)return 1;
	else if(s==205413)return 1;
	else if(s==205431)return 1;//
	else if(s==210345)return 1;
	else if(s==210354)return 1;
	else if(s==210435)return 1;
	else if(s==210453)return 1;
	else if(s==210534)return 1;
	else if(s==210543)return 1;
	else if(s==213045)return 1;
	else if(s==213054)return 1;
	else if(s==213405)return 1;
	else if(s==213450)return 1;
	else if(s==213504)return 1;
	else if(s==213540)return 1;
	else if(s==214035)return 1;
	else if(s==214053)return 1;
	else if(s==214305)return 1;
	else if(s==214350)return 1;
	else if(s==214503)return 1;
	else if(s==214530)return 1;
	else if(s==215034)return 1;
	else if(s==215043)return 1;
	else if(s==215304)return 1;
	else if(s==215340)return 1;
	else if(s==215403)return 1;
	else if(s==215430)return 1;
	else if(s==230145)return 1;
	else if(s==230154)return 1;
	else if(s==230415)return 1;
	else if(s==230451)return 1;
	else if(s==230514)return 1;
	else if(s==230541)return 1;
	else if(s==231045)return 1;
	else if(s==231054)return 1;
	else if(s==231405)return 1;
	else if(s==231450)return 1;
	else if(s==231504)return 1;
	else if(s==231540)return 1;
	else if(s==234015)return 1;
	else if(s==234051)return 1;
	else if(s==234105)return 1;
	else if(s==234150)return 1;
	else if(s==234501)return 1;
	else if(s==234510)return 1;
	else if(s==235014)return 1;
	else if(s==235041)return 1;
	else if(s==235104)return 1;
	else if(s==235140)return 1;
	else if(s==235401)return 1;
	else if(s==235410)return 1;
	else if(s==240135)return 1;
	else if(s==240153)return 1;
	else if(s==240315)return 1;
	else if(s==240351)return 1;
	else if(s==240513)return 1;
	else if(s==240531)return 1;
	else if(s==241035)return 1;
	else if(s==241053)return 1;
	else if(s==241305)return 1;
	else if(s==241350)return 1;
	else if(s==241503)return 1;
	else if(s==241530)return 1;
	else if(s==243015)return 1;
	else if(s==243051)return 1;
	else if(s==243105)return 1;
	else if(s==243150)return 1;
	else if(s==243501)return 1;
	else if(s==243510)return 1;
	else if(s==245013)return 1;
	else if(s==245031)return 1;
	else if(s==245103)return 1;
	else if(s==245130)return 1;
	else if(s==245301)return 1;
	else if(s==245310)return 1;
	else if(s==250134)return 1;
	else if(s==250143)return 1;
	else if(s==250314)return 1;
	else if(s==250341)return 1;
	else if(s==250413)return 1;
	else if(s==250431)return 1;
	else if(s==251034)return 1;
	else if(s==251043)return 1;
	else if(s==251304)return 1;
	else if(s==251340)return 1;
	else if(s==251403)return 1;
	else if(s==251430)return 1;
	else if(s==253014)return 1;
	else if(s==253041)return 1;
	else if(s==253104)return 1;
	else if(s==253140)return 1;
	else if(s==253401)return 1;
	else if(s==253410)return 1;
	else if(s==254013)return 1;
	else if(s==254031)return 1;
	else if(s==254103)return 1;
	else if(s==254130)return 1;
	else if(s==254301)return 1;
	else if(s==254310)return 1;
	return 0;
}
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	long long a,b,ans=0;
	cin>>a>>b;
	for(int j=a;j<=b;j++)
	{
		if(luck(j)==1)ans++;
	}
	cout<<ans;
	return 0;
}