A1406.[COCI-2008_2009-regional]#6 TABLICA

省选/NOI-

COCI

通过率:0%

时间限制:1.00s

内存限制:128MB

题目描述

Ivo has an N×N table. The table has the integers 1 through N2 inscribed in row-major order. The following operations can be done on the table:

  1. Rotate a row – all cells in a single row are rotated right, so that the number in the last column moves to the first.
  2. Rotate a column – all cells in a single column are rotated down, so that the number in the last row moves to the first.
    Ivo occasionally feels the urge to move a number X to cell (R, C) and proceeds as follows:
    • While X is not in column C, rotate the row it is in.
    • While X is not in row R, rotate the column it is in.
    Here is an example of how to move number 6 to cell (3, 4), start from the initial configuration:
    Ivo wants to move K numbers one after another. Write a program that calculates the number of rotations needed.

输入格式

The first line contains two integers N (2 ≤ N ≤ 10000) and K (1 ≤ K ≤ 1000), the table dimension and the number of moves.
Each of the following K lines contains three integers X (1 ≤ X ≤ N2), R and C (1 ≤ R, C ≤ N), the description of one move Ivo wants to make. Ivo does the moves in the order in which they are given.

输出格式

Output K lines; for each move, output the number of rotations needed.

输入输出样例

  • 输入#1

    4 1 
    6 3 4 

    输出#1

    3 
  • 输入#2

    4 2 
    6 3 4 
    6 2 2

    输出#2

    3 
    5 
  • 输入#3

    5 3 
    1 2 2 
    2 2 2 
    12 5 5 

    输出#3

    2 
    5 
    3

说明/提示

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