#include <bits/stdc++.h>
using namespace std;

bool arr[1000005];

int main() {
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	int a, b, cnt = 0; 
	cin >> a >> b; 
	arr[10]=arr[102]=arr[120]=arr[201]=arr[210]=arr[1023]=arr[1032]=arr[1203]=arr[1230]=arr[1302]=arr[1320]=arr[2013]=arr[2031]=arr[2103]=arr[2130]=arr[2301]=arr[2310]=arr[3012]=arr[3021]=arr[3102]=arr[3120]=arr[3201]=arr[3210]=arr[10234]=arr[10243]=arr[10324]=arr[10342]=arr[10423]=arr[10432]=arr[12034]=arr[12043]=arr[12304]=arr[12340]=arr[12403]=arr[12430]=arr[13024]=arr[13042]=arr[13204]=arr[13240]=arr[13402]=arr[13420]=arr[14023]=arr[14032]=arr[14203]=arr[14230]=arr[14302]=arr[14320]=arr[20134]=arr[20143]=arr[20314]=arr[20341]=arr[20413]=arr[20431]=arr[21034]=arr[21043]=arr[21304]=arr[21340]=arr[21403]=arr[21430]=arr[23014]=arr[23041]=arr[23104]=arr[23140]=arr[23401]=arr[23410]=arr[24013]=arr[24031]=arr[24103]=arr[24130]=arr[24301]=arr[24310]=arr[30124]=arr[30142]=arr[30214]=arr[30241]=arr[30412]=arr[30421]=arr[31024]=arr[31042]=arr[31204]=arr[31240]=arr[31402]=arr[31420]=arr[32014]=arr[32041]=arr[32104]=arr[32140]=arr[32401]=arr[32410]=arr[34012]=arr[34021]=arr[34102]=arr[34120]=arr[34201]=arr[34210]=arr[40123]=arr[40132]=arr[40213]=arr[40231]=arr[40312]=arr[40321]=arr[41023]=arr[41032]=arr[41203]=arr[41230]=arr[41302]=arr[41320]=arr[42013]=arr[42031]=arr[42103]=arr[42130]=arr[42301]=arr[42310]=arr[43012]=arr[43021]=arr[43102]=arr[43120]=arr[43201]=arr[43210]=arr[102345]=arr[102354]=arr[102435]=arr[102453]=arr[102534]=arr[102543]=arr[103245]=arr[103254]=arr[103425]=arr[103452]=arr[103524]=arr[103542]=arr[104235]=arr[104253]=arr[104325]=arr[104352]=arr[104523]=arr[104532]=arr[105234]=arr[105243]=arr[105324]=arr[105342]=arr[105423]=arr[105432]=arr[120345]=arr[120354]=arr[120435]=arr[120453]=arr[120534]=arr[120543]=arr[123045]=arr[123054]=arr[123405]=arr[123450]=arr[123504]=arr[123540]=arr[124035]=arr[124053]=arr[124305]=arr[124350]=arr[124503]=arr[124530]=arr[125034]=arr[125043]=arr[125304]=arr[125340]=arr[125403]=arr[125430]=arr[130245]=arr[130254]=arr[130425]=arr[130452]=arr[130524]=arr[130542]=arr[132045]=arr[132054]=arr[132405]=arr[132450]=arr[132504]=arr[132540]=arr[134025]=arr[134052]=arr[134205]=arr[134250]=arr[134502]=arr[134520]=arr[135024]=arr[135042]=arr[135204]=arr[135240]=arr[135402]=arr[135420]=arr[140235]=arr[140253]=arr[140325]=arr[140352]=arr[140523]=arr[140532]=arr[142035]=arr[142053]=arr[142305]=arr[142350]=arr[142503]=arr[142530]=arr[143025]=arr[143052]=arr[143205]=arr[143250]=arr[143502]=arr[143520]=arr[145023]=arr[145032]=arr[145203]=arr[145230]=arr[145302]=arr[145320]=arr[150234]=arr[150243]=arr[150324]=arr[150342]=arr[150423]=arr[150432]=arr[152034]=arr[152043]=arr[152304]=arr[152340]=arr[152403]=arr[152430]=arr[153024]=arr[153042]=arr[153204]=arr[153240]=arr[153402]=arr[153420]=arr[154023]=arr[154032]=arr[154203]=arr[154230]=arr[154302]=arr[154320]=arr[201345]=arr[201354]=arr[201435]=arr[201453]=arr[201534]=arr[201543]=arr[203145]=arr[203154]=arr[203415]=arr[203451]=arr[203514]=arr[203541]=arr[204135]=arr[204153]=arr[204315]=arr[204351]=arr[204513]=arr[204531]=arr[205134]=arr[205143]=arr[205314]=arr[205341]=arr[205413]=arr[205431]=arr[210345]=arr[210354]=arr[210435]=arr[210453]=arr[210534]=arr[210543]=arr[213045]=arr[213054]=arr[213405]=arr[213450]=arr[213504]=arr[213540]=arr[214035]=arr[214053]=arr[214305]=arr[214350]=arr[214503]=arr[214530]=arr[215034]=arr[215043]=arr[215304]=arr[215340]=arr[215403]=arr[215430]=arr[230145]=arr[230154]=arr[230415]=arr[230451]=arr[230514]=arr[230541]=arr[231045]=arr[231054]=arr[231405]=arr[231450]=arr[231504]=arr[231540]=arr[234015]=arr[234051]=arr[234105]=arr[234150]=arr[234501]=arr[234510]=arr[235014]=arr[235041]=arr[235104]=arr[235140]=arr[235401]=arr[235410]=arr[240135]=arr[240153]=arr[240315]=arr[240351]=arr[240513]=arr[240531]=arr[241035]=arr[241053]=arr[241305]=arr[241350]=arr[241503]=arr[241530]=arr[243015]=arr[243051]=arr[243105]=arr[243150]=arr[243501]=arr[243510]=arr[245013]=arr[245031]=arr[245103]=arr[245130]=arr[245301]=arr[245310]=arr[250134]=arr[250143]=arr[250314]=arr[250341]=arr[250413]=arr[250431]=arr[251034]=arr[251043]=arr[251304]=arr[251340]=arr[251403]=arr[251430]=arr[253014]=arr[253041]=arr[253104]=arr[253140]=arr[253401]=arr[253410]=arr[254013]=arr[254031]=arr[254103]=arr[254130]=arr[254301]=arr[254310]=arr[301245]=arr[301254]=arr[301425]=arr[301452]=arr[301524]=arr[301542]=arr[302145]=arr[302154]=arr[302415]=arr[302451]=arr[302514]=arr[302541]=arr[304125]=arr[304152]=arr[304215]=arr[304251]=arr[304512]=arr[304521]=arr[305124]=arr[305142]=arr[305214]=arr[305241]=arr[305412]=arr[305421]=arr[310245]=arr[310254]=arr[310425]=arr[310452]=arr[310524]=arr[310542]=arr[312045]=arr[312054]=arr[312405]=arr[312450]=arr[312504]=arr[312540]=arr[314025]=arr[314052]=arr[314205]=arr[314250]=arr[314502]=arr[314520]=arr[315024]=arr[315042]=arr[315204]=arr[315240]=arr[315402]=arr[315420]=arr[320145]=arr[320154]=arr[320415]=arr[320451]=arr[320514]=arr[320541]=arr[321045]=arr[321054]=arr[321405]=arr[321450]=arr[321504]=arr[321540]=arr[324015]=arr[324051]=arr[324105]=arr[324150]=arr[324501]=arr[324510]=arr[325014]=arr[325041]=arr[325104]=arr[325140]=arr[325401]=arr[325410]=arr[340125]=arr[340152]=arr[340215]=arr[340251]=arr[340512]=arr[340521]=arr[341025]=arr[341052]=arr[341205]=arr[341250]=arr[341502]=arr[341520]=arr[342015]=arr[342051]=arr[342105]=arr[342150]=arr[342501]=arr[342510]=arr[345012]=arr[345021]=arr[345102]=arr[345120]=arr[345201]=arr[345210]=arr[350124]=arr[350142]=arr[350214]=arr[350241]=arr[350412]=arr[350421]=arr[351024]=arr[351042]=arr[351204]=arr[351240]=arr[351402]=arr[351420]=arr[352014]=arr[352041]=arr[352104]=arr[352140]=arr[352401]=arr[352410]=arr[354012]=arr[354021]=arr[354102]=arr[354120]=arr[354201]=arr[354210]=arr[401235]=arr[401253]=arr[401325]=arr[401352]=arr[401523]=arr[401532]=arr[402135]=arr[402153]=arr[402315]=arr[402351]=arr[402513]=arr[402531]=arr[403125]=arr[403152]=arr[403215]=arr[403251]=arr[403512]=arr[403521]=arr[405123]=arr[405132]=arr[405213]=arr[405231]=arr[405312]=arr[405321]=arr[410235]=arr[410253]=arr[410325]=arr[410352]=arr[410523]=arr[410532]=arr[412035]=arr[412053]=arr[412305]=arr[412350]=arr[412503]=arr[412530]=arr[413025]=arr[413052]=arr[413205]=arr[413250]=arr[413502]=arr[413520]=arr[415023]=arr[415032]=arr[415203]=arr[415230]=arr[415302]=arr[415320]=arr[420135]=arr[420153]=arr[420315]=arr[420351]=arr[420513]=arr[420531]=arr[421035]=arr[421053]=arr[421305]=arr[421350]=arr[421503]=arr[421530]=arr[423015]=arr[423051]=arr[423105]=arr[423150]=arr[423501]=arr[423510]=arr[425013]=arr[425031]=arr[425103]=arr[425130]=arr[425301]=arr[425310]=arr[430125]=arr[430152]=arr[430215]=arr[430251]=arr[430512]=arr[430521]=arr[431025]=arr[431052]=arr[431205]=arr[431250]=arr[431502]=arr[431520]=arr[432015]=arr[432051]=arr[432105]=arr[432150]=arr[432501]=arr[432510]=arr[435012]=arr[435021]=arr[435102]=arr[435120]=arr[435201]=arr[435210]=arr[450123]=arr[450132]=arr[450213]=arr[450231]=arr[450312]=arr[450321]=arr[451023]=arr[451032]=arr[451203]=arr[451230]=arr[451302]=arr[451320]=arr[452013]=arr[452031]=arr[452103]=arr[452130]=arr[452301]=arr[452310]=arr[453012]=arr[453021]=arr[453102]=arr[453120]=arr[453201]=arr[453210]=arr[501234]=arr[501243]=arr[501324]=arr[501342]=arr[501423]=arr[501432]=arr[502134]=arr[502143]=arr[502314]=arr[502341]=arr[502413]=arr[502431]=arr[503124]=arr[503142]=arr[503214]=arr[503241]=arr[503412]=arr[503421]=arr[504123]=arr[504132]=arr[504213]=arr[504231]=arr[504312]=arr[504321]=arr[510234]=arr[510243]=arr[510324]=arr[510342]=arr[510423]=arr[510432]=arr[512034]=arr[512043]=arr[512304]=arr[512340]=arr[512403]=arr[512430]=arr[513024]=arr[513042]=arr[513204]=arr[513240]=arr[513402]=arr[513420]=arr[514023]=arr[514032]=arr[514203]=arr[514230]=arr[514302]=arr[514320]=arr[520134]=arr[520143]=arr[520314]=arr[520341]=arr[520413]=arr[520431]=arr[521034]=arr[521043]=arr[521304]=arr[521340]=arr[521403]=arr[521430]=arr[523014]=arr[523041]=arr[523104]=arr[523140]=arr[523401]=arr[523410]=arr[524013]=arr[524031]=arr[524103]=arr[524130]=arr[524301]=arr[524310]=arr[530124]=arr[530142]=arr[530214]=arr[530241]=arr[530412]=arr[530421]=arr[531024]=arr[531042]=arr[531204]=arr[531240]=arr[531402]=arr[531420]=arr[532014]=arr[532041]=arr[532104]=arr[532140]=arr[532401]=arr[532410]=arr[534012]=arr[534021]=arr[534102]=arr[534120]=arr[534201]=arr[534210]=arr[540123]=arr[540132]=arr[540213]=arr[540231]=arr[540312]=arr[540321]=arr[541023]=arr[541032]=arr[541203]=arr[541230]=arr[541302]=arr[541320]=arr[542013]=arr[542031]=arr[542103]=arr[542130]=arr[542301]=arr[542310]=arr[543012]=arr[543021]=arr[543102]=arr[543120]=arr[543201]=arr[543210]=1;
	for (int i = a; i <= b; i++) { 
		cnt += arr[i];
	}
	cout << cnt;
	return 0;
}