True kx
Before playing a sand sculpture Chairman of the tree, and the complexity of a positive solution, like hair, the result of constant explode!
I have been naive to think that this problem can often Kaka AC, then the card to the card often did not die out A, limit data probably ran 1.1s
Today, finally playing a positive solution, offline processing, you can use a constant smaller Fenwick tree maintenance, so you can swap A
Chairman of the tree can be answered online, but the complexity and positive solutions to the same, but this constant ........
For the first time submitted to the President tree June 17
AC June 16
Mobius inversion of the basic end of it (apart from number theory a person can not do, a time where the solution to a problem decadent )