Problem:
Score : 400 points

Problem Statement

We have an undirected graph G with N vertices numbered 1 to N and N edges as follows:

For each i=1,2,...,N-1, there is an edge between Vertex i and Vertex i+1.

There is an edge between Vertex X and Vertex Y.

For each k=1,2,...,N-1, solve the problem below:

Find the number of pairs of integers (i,j) (1 \leq i < j \leq N) such that the shortest distance between Vertex i and Vertex j in G is k.

Constraints

3 \leq N \leq 2 \times 10^3

1 \leq X,Y \leq N

X+1 < Y

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N X Y

Output

For each k=1, 2, ..., N-1 in this order, print a line containing the answer to the problem.

Sample Input 1

5 2 4

Sample Output 1

5
4
1
0

The graph in this input is as follows:

There are five pairs (i,j) (1 \leq i < j \leq N) such that the shortest distance between Vertex i and Vertex j is 1: (1,2)\,,(2,3)\,,(2,4)\,,(3,4)\,,(4,5).

There are four pairs (i,j) (1 \leq i < j \leq N) such that the shortest distance between Vertex i and Vertex j is 2: (1,3)\,,(1,4)\,,(2,5)\,,(3,5).

There is one pair (i,j) (1 \leq i < j \leq N) such that the shortest distance between Vertex i and Vertex j is 3: (1,5).

There are no pairs (i,j) (1 \leq i < j \leq N) such that the shortest distance between Vertex i and Vertex j is 4.

Sample Input 2

3 1 3

Sample Output 2

3
0

The graph in this input is as follows:

Sample Input 3

7 3 7

Sample Output 3

7
8
4
2
0
0

Sample Input 4

10 4 8

Sample Output 4

10
12
10
8
4
1
0
0
0

Solution in Haskell (GHC 7.10.3) (judge verdict: Wrong Answer)

module Main where

import           Debug.Trace
import qualified Data.Vector.Unboxed as VU

main :: IO ()
main = do
    [n, vertexX, vertexY] <- map read . words <$> getLine

    let numList  = [1 .. n-1]
    let combList =[(i,j) | i<-numList, j<-[i+1..n] ]

    let shortestList =
            foldl (\acc x -> acc ++ [((aaaa x vertexX vertexY),1)]) [] combList
    let aaaList = 
                sumShortest shortestList numList

    --mapM putStrLn (map  (\x->show (snd x))  aaaList)
    VU.mapM_ print aaaList

aaaa :: (Int,Int) -> Int -> Int -> Int
aaaa x vertexX vertexY  =  min (abs (start-vertexX) + 1 + abs (end-vertexY)) (end - start)
  where
    start    = fst x :: Int
    end      = snd x :: Int
    smaller a b = if a < b then a else b

sumShortest :: [(Int,Int)] -> [Int]-> VU.Vector Int
sumShortest shortestList numList =
    VU.accum (+) (VU.replicate (length numList) 0) shortestList
inc ::[(Int,Int)]->Int->[(Int,Int)]
inc (x:xs) y= if (fst x)==y then (y,(snd x) + 1):xs else x: (inc xs y)