![\"\"](\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2020/09/19/sample_1_1929.png\")
There is a strange printer with the following two special requirements:
\n\nYou 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.
\n
Example 1:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/12/23/print1.jpg\")
\n\nInput: targetGrid = [[1,1,1,1],[1,2,2,1],[1,2,2,1],[1,1,1,1]]\nOutput: true\n\n\n
Example 2:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/12/23/print2.jpg\")
\n\nInput: targetGrid = [[1,1,1,1],[1,1,3,3],[1,1,3,4],[5,5,1,4]]\nOutput: true\n\n\n
Example 3:
\n\n\nInput: targetGrid = [[1,2,1],[2,1,2],[1,2,1]]\nOutput: false\nExplanation: It is impossible to form targetGrid because it is not allowed to print the same color in different turns.\n\n\n
\n
Constraints:
\n\nm == targetGrid.lengthn == targetGrid[i].length1 <= m, n <= 601 <= targetGrid[row][col] <= 60给你一个奇怪的打印机，它有如下两个特殊的打印规则：
\n\n给你一个初始没有颜色的 m x n 的矩形 targetGrid ，其中 targetGrid[row][col] 是位置 (row, col) 的颜色。
如果你能按照上述规则打印出矩形 targetGrid ，请你返回 true ，否则返回 false 。
\n\n
示例 1：
\n\n
输入：targetGrid = [[1,1,1,1],[1,2,2,1],[1,2,2,1],[1,1,1,1]]\n输出：true\n\n\n
示例 2：
\n\n![\"\"](\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2020/09/19/sample_2_1929.png\")
输入：targetGrid = [[1,1,1,1],[1,1,3,3],[1,1,3,4],[5,5,1,4]]\n输出：true\n\n\n
示例 3：
\n\n输入：targetGrid = [[1,2,1],[2,1,2],[1,2,1]]\n输出：false\n解释：没有办法得到 targetGrid ，因为每一轮操作使用的颜色互不相同。\n\n
示例 4：
\n\n输入：targetGrid = [[1,1,1],[3,1,3]]\n输出：false\n\n\n
\n\n
提示：
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Algorithms \\u6a21\\u5757\\u4e2d\\u63d0\\u4f9b\\uff1ahttps:\\/\\/www.rubydoc.info\\/github\\/kanwei\\/algorithms\\/Algorithms<\\/p>\"],\"swift\":[\"Swift\",\" \\u7248\\u672c\\uff1a \\u6211\\u4eec\\u901a\\u5e38\\u4fdd\\u8bc1\\u66f4\\u65b0\\u5230 Apple\\u653e\\u51fa\\u7684\\u6700\\u65b0\\u7248Swift<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u53d1\\u73b0Swift\\u4e0d\\u662f\\u6700\\u65b0\\u7248\\u7684\\uff0c\\u8bf7\\u8054\\u7cfb\\u6211\\u4eec\\uff01\\u6211\\u4eec\\u5c06\\u5c3d\\u5feb\\u66f4\\u65b0\\u3002<\\/p>\"],\"golang\":[\"Go\",\" \\u7248\\u672c\\uff1a \\u652f\\u6301 https:\\/\\/godoc.org\\/github.com\\/emirpasic\\/gods<\\/a> \\u7b2c\\u4e09\\u65b9\\u5e93\\u3002<\\/p>\"],\"python3\":[\"Python3\",\" \\u7248\\u672c\\uff1a \\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982array<\\/a>, bisect<\\/a>, collections<\\/a>\\u3002 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