1591. Strange Printer II
Description
There is a strange printer with the following two special requirements:
- On each turn, the printer will print a solid rectangular pattern of a single color on the grid. This will cover up the existing colors in the rectangle.
- Once the printer has used a color for the above operation, the same color cannot be used again.
You are given a m x n
matrix targetGrid
, where targetGrid[row][col]
is the color in the position (row, col)
of the grid.
Return true
if it is possible to print the matrix targetGrid
, otherwise, return false
.
Example 1:
Input: targetGrid = [[1,1,1,1],[1,2,2,1],[1,2,2,1],[1,1,1,1]] Output: true
Example 2:
Input: targetGrid = [[1,1,1,1],[1,1,3,3],[1,1,3,4],[5,5,1,4]] Output: true
Example 3:
Input: targetGrid = [[1,2,1],[2,1,2],[1,2,1]] Output: false Explanation: It is impossible to form targetGrid because it is not allowed to print the same color in different turns.
Constraints:
m == targetGrid.length
n == targetGrid[i].length
1 <= m, n <= 60
1 <= targetGrid[row][col] <= 60
Solutions
Solution 1
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