JAVA大数....

How Many Fibs?

10 100
1234567890 9876543210
0 0

5
4

import java.util.*;
import java.math.*;
import java.io.*;

public class Main
{
	public static void main(String[] args)
	{
		Scanner cin=new Scanner(System.in);
		
		final BigInteger maxlimit=BigInteger.TEN.pow(100);
		BigInteger[] fib=new BigInteger[500];
		
		fib[0]=BigInteger.ONE;
		fib[1]=BigInteger.valueOf(2);
		
		for(int i=2;i<500;i++)
		{
			fib[i]=fib[i-1].add(fib[i-2]);
		}
		
		while(cin.hasNextBigInteger())
		{
			BigInteger a=cin.nextBigInteger();
			BigInteger b=cin.nextBigInteger();
			if(a.compareTo(BigInteger.ZERO)==0&&b.compareTo(BigInteger.ZERO)==0)
				break;
			int ans=0;
			for(int i=0;i<500;i++)
			{
				if(fib[i].compareTo(a)>=0&&fib[i].compareTo(b)<=0)
					ans++;
			}
			System.out.println(ans);
		}
	}	
}