BST  Binary Search Tree
A binary search tree is a tree in which every node has at most two children nodes (a left and a right child). Each node has an integer written inside it. If the number X is written inside a node, then the numbers in its left subtree are less than X and the numbers in its right subtree are greater than X.
You will be given a sequence of integers between 1 and N (inclusive) such that each number appears in the sequence exactly once. You are to create a binary search tree from the sequence, putting the first number in the root node and inserting every other number in order. In other words, run insert (X, root) for every other number:
insert (number X, node N) increase the counter C by 1 if X is less than the number in node N if N has no left child create a new node with the number X and set it to be the left child of node N else insert (X, left child of node N) else (X is greater than the number in node N) if N has no right child create a new node with the number X and set it to be the right child of node N else insert (X, right child of node N)
Write a program that calculates the value of the counter C after every number is inserted. The counter is initially 0.
Input
The first line contains the integer N (1 ≤ N ≤ 300 000), the length of the sequence.
The remaining N lines contain the numbers in the sequence, integers in the interval [1, N]. The numbers will be distinct.
Output
Output N integers, each on its own line, the values of the counter C after each number is inserted into the tree.
Example
Input: 8 3 5 1 6 8 7 2 4 Output: 0 1 2 4 7 11 13 15
Warning: large input/output data.
Warning: A naive algorithm may not run in time; do not simply implement the above algorithm.
Note: The test data for this problem consist of the official test cases from the contest, as well some cases of my own.
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anirudnits:
20181221 12:03:30
use long long int. 

new2zy:
20180928 11:21:09
I had solved this problem by using an O(nlogn) method，but now I found a magic O(n) method to solve this problem :)Amazing! 

hmp:
20160521 04:42:54
Why the time limit given like this : 0.120s0.589s


aditiwari:
20160118 12:10:26
got WA because of taking int instead of long long int. :(


Saksham :
20150710 21:19:32
nice problem my 100th!!!! C++ STL 

Aman:
20150611 22:21:58
1)... use scanf(),printf() instead of cin,cout...


Sebastian Toton:
20150407 16:24:34
Isn't problem for c++ :) Last edit: 20150407 16:25:26 

Mercury:
20150101 15:26:11
A very Good Problem :) 
Added by:  Neal Wu 
Date:  20081217 
Time limit:  1s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO 
Resource:  Croatian Open 08/09  Contest 3 