I used high-precision and recursion...
but I get WA at test 4....
but if I input 170 10,the answer on my local is correct...
please someone give me a test case to test my program?

sorry，I know why...It's the high-percision I designed is wrong...

I store each 3 digit of the orginal number in a int,but when I output the number,I forgot to insert 0 before the int which digit is less than 3.

sorry for my english...