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odd-even number

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 1948    Accepted Submission(s): 1088


Problem Description
For a number,if the length of continuous odd digits is even and the length of continuous even digits is odd,we call it odd-even number.Now we want to know the amount of odd-even number between L,R(1<=L<=R<= 9*10^18).
 

Input
First line a t,then t cases.every line contains two integers L and R.
 

Output
Print the output for each case on one line in the format as shown below.
 

Sample Input
2    
1 100    
110 220
 

Sample Output
Case #1: 29
Case #2: 36
 

Source
2016 ACM/ICPC Asia Regional Shenyang Online
 

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