1102. Path With Maximum Minimum Value

Given a matrix of integers A  with  R  rows and C  columns, find the maximum  score of a path starting at  [0,0]  and ending at [R-1,C-1] .

The score of a path is the minimum value in that path.  For example, the value of the path 8 →  4 →  5 →  9 is 4.

A path moves some number of times from one visited cell to any neighbouring unvisited cell in one of the 4 cardinal directions (north, east, west, south).

 

Example 1:

Input: 

[[5,4,5],[1,2,6],[7,4,6]]

Output: 

4

Explanation: 

The path with the maximum score is highlighted in yellow. 

Example 2:

Input: 

[[2,2,1,2,2,2],[1,2,2,2,1,2]]

Output: 2

Example 3:

Input: 

[[3,4,6,3,4],[0,2,1,1,7],[8,8,3,2,7],[3,2,4,9,8],[4,1,2,0,0],[4,6,5,4,3]]

Output: 3

 

Note:

  1. 1 <= R, C <= 100
  2. 0 <= A[i][j] <= 10^9

1、题目描述

给你一个 RC 列的整数矩阵 A。矩阵上的路径从 [0,0] 开始,在 [R-1,C-1] 结束。

路径沿四个基本方向(上、下、左、右)展开,从一个已访问单元格移动到任一相邻的未访问单元格。

路径的得分是该路径上的 最小 值。例如,路径 8 → 4 → 5 → 9 的值为 4

找出所有路径中得分 最高 的那条路径,返回其 得分。

示例 1:

img

输入:[[5,4,5],[1,2,6],[7,4,6]]
输出:4
解释: 
得分最高的路径用黄色突出显示。 

示例 2:

img

输入:[[2,2,1,2,2,2],[1,2,2,2,1,2]]
输出:2

示例 3:

img

输入:[[3,4,6,3,4],[0,2,1,1,7],[8,8,3,2,7],[3,2,4,9,8],[4,1,2,0,0],[4,6,5,4,3]]
输出:3

提示:

Difficulty:

Medium

Lock:

Prime

Company:

Amazon