// 解释：第一个有效数字不能是0，栈空时存0无意义，直接跳过
All of the examples demonstrating ordered dithering so far have been produced using a specific type of threshold matrix commonly known as a Bayer matrix. In theory however any matrix could be used and a number of alternatives are available depending on your qualitative preference. Matrices also don’t have to be square or even rectangular; polyomino-based dithering matrices have been explored as well[6].
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// 易错点1：未初始化数组长度 → 赋值res[i]时会报错；无需fill(0)，因为每个位置都会显式赋值
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3 models · 4 project types · 20 tool categories · 85.3% extraction rate，这一点在爱思助手下载最新版本中也有详细论述
第五十三条 有下列行为之一的，处五日以下拘留或者警告；情节较重的，处五日以上十日以下拘留，可以并处一千元以下罚款：