hdu2089数位dp

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
import java.util.NavigableSet;
import java.util.PriorityQueue;
import java.util.Queue;
import java.util.Scanner;
import java.util.Set;
import java.util.SortedSet;
import java.util.Stack;
import java.util.StringTokenizer;
import java.util.TreeSet;

public class Main {

public static void main(String[] args) throws IOException{
StreamTokenizer cin = new StreamTokenizer(new BufferedInputStream(System.in));
InputReader in = new InputReader(System.in)  ;
PrintWriter out = new PrintWriter(System.out) ;

while(true){
int l = in.nextInt() ;
int r = in.nextInt() ;
if(l==0 && r==0) break ;
new Task().solve(l, r , out) ;
}
out.flush() ;
}

}

class  Task{

static int  dp[][] = new int[10][10] ;
static{
for(int i = 0 ; i < 10 ; i++)  Arrays.fill(dp[i], -1);
}
static int[]  bit = new int[10] ;
static int  len ;

int  dfs(int pos , int pre , boolean end){
if(pos == -1) return 1 ;
if(!end && dp[pos][pre] != -1) return dp[pos][pre] ;
int d = end ? bit[pos] : 9 ;
int sum = 0 ;
for(int i = 0 ; i <= d ; i++){
if(i == 4) continue ;
if(pre == 6 && i == 2) continue ;
sum += dfs(pos-1 , i , end && i == d) ;
}
if(!end) dp[pos][pre] = sum ;
return sum ;
}

int  answer(int n){
len = 0 ;
while(n > 0){
bit[len++] = n % 10 ;
n /= 10 ;
}
return dfs(len-1 , 0 , true)  ;
}

public void solve(int l , int r , PrintWriter out) throws IOException{
out.println(answer(r) - answer(l-1)) ;
}
}

class   InputReader{
public BufferedReader  reader;
public StringTokenizer  tokenizer;

public InputReader(InputStream stream){
reader = new BufferedReader(new InputStreamReader(stream), 32768) ;
tokenizer = null ;
}

public String next(){
while(tokenizer == null || ! tokenizer.hasMoreTokens()){
try{
tokenizer = new StringTokenizer(reader.readLine());
}catch (IOException e){
throw new RuntimeException(e);
}
}
return tokenizer.nextToken();
}

public int  nextInt(){
return Integer.parseInt(next());
}

public long nextLong(){
return Long.parseLong(next());
}

public double nextDouble(){
return  Double.parseDouble(next());
}

}