Codeforces Round 608 (Div. 2)
C
Shawarma Tent
Codeforces
1300
原题
← BD →
翻译中…

The map of the capital of Berland can be viewed on the infinite coordinate plane. Each point with integer coordinates contains a building, and there are streets connecting every building to four neighbouring buildings. All streets are parallel to the coordinate axes.

翻译中…

The main school of the capital is located in $(s_x, s_y)$. There are $n$ students attending this school, the $i$-th of them lives in the house located in $(x_i, y_i)$. It is possible that some students live in the same house, but no student lives in $(s_x, s_y)$.

翻译中…

After classes end, each student walks from the school to his house along one of the shortest paths. So the distance the $i$-th student goes from the school to his house is $|s_x - x_i| + |s_y - y_i|$.

翻译中…

The Provision Department of Berland has decided to open a shawarma tent somewhere in the capital (at some point with integer coordinates). It is considered that the $i$-th student will buy a shawarma if at least one of the shortest paths from the school to the $i$-th student's house goes through the point where the shawarma tent is located. It is forbidden to place the shawarma tent at the point where the school is located, but the coordinates of the shawarma tent may coincide with the coordinates of the house of some student (or even multiple students).

翻译中…

You want to find the maximum possible number of students buying shawarma and the optimal location for the tent itself.

翻译中…

Input

翻译中…

The first line contains three integers $n$, $s_x$, $s_y$ ($1 \le n \le 200\,000$, $0 \le s_x, s_y \le 10^{9}$) — the number of students and the coordinates of the school, respectively.

翻译中…

Then $n$ lines follow. The $i$-th of them contains two integers $x_i$, $y_i$ ($0 \le x_i, y_i \le 10^{9}$) — the location of the house where the $i$-th student lives. Some locations of houses may coincide, but no student lives in the same location where the school is situated.

翻译中…

Output

翻译中…

The output should consist of two lines. The first of them should contain one integer $c$ — the maximum number of students that will buy shawarmas at the tent.

翻译中…

The second line should contain two integers $p_x$ and $p_y$ — the coordinates where the tent should be located. If there are multiple answers, print any of them. Note that each of $p_x$ and $p_y$ should be not less than $0$ and not greater than $10^{9}$.

翻译中…

Note

翻译中…

In the first example, If we build the shawarma tent in $(4, 2)$, then the students living in $(4, 2)$, $(4, 1)$ and $(5, 1)$ will visit it.

翻译中…

In the second example, it is possible to build the shawarma tent in $(1, 1)$, then both students living in $(0, 0)$ will visit it.

翻译中…

样例

Input #1
4 3 2
1 3
4 2
5 1
4 1
Output #1
3
4 2
InputCopy OutputCopy
Input #2
3 100 100
0 0
0 0
100 200
Output #2
2
99 100
InputCopy OutputCopy
Input #3
7 10 12
5 6
20 23
15 4
16 5
4 54
12 1
4 15
Output #3
4
10 11
InputCopy OutputCopy
题目信息
题号
1271C
时间限制
1 s
内存限制
256 MB
标签
暴力
计算几何
贪心
模拟

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。