101603: [AtCoder]ABC160 D - Line++

Memory Limit:256 MB Time Limit:2 S
Judge Style:Text Compare Creator:
Submit:0 Solved:0

Description

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:

Figure

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:

Figure


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

Input

题意翻译

## 题意 有一张 $N$ 个点、$N$ 条边的图。 - 对于第 $i$ 个点($1 \leq i < N$),连一条 $i$ 和 $i+1$ 之间的无向边。 - 再给你两个点 $x, y$ 满足 $y > x + 1$,连一条 $x$ 和 $y$ 之间的无向边。 对于 $k=1, 2, \cdots, n-1$,求图上最短路径为 $k$ 的点对数。 ## 输入格式 一行三个整数 $N$, $x$, $y$。 ## 输出格式 对于每一个 $k=1, 2, \cdots, n-1$,输出一行表示答案。 ## 数据范围 $3 \leq N \leq 2 \times 10^3$. $1 \leq x, y \leq N$. $x + 1 < y$. 所有输入均为整数.

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