1.Pay attention 0 < ai < bi < 1e9. (I forgot the 0 and 1e9 axis...then wa teat 2 for many time)
2.The data of test 3 maybe
1
1 1000000000 b
answer：
0 1

I make an error while recursion to the leaf note. I return the l index instead of the axis it map to. T T

Edited by author 11.10.2012 19:04