The most basic Ansi escape codes are those involved in rendering text. These let you add decorations like Colors, Background Colors or other Decorations to your printed text, but don't do anything fancy. The text you print will still end up at the bottom of the terminal, and still make your terminal scroll, just now it will be colored text instead of the default black/white color scheme your terminal has.
dtparam=hsync-invert,vsync-invert
，更多细节参见WPS官方版本下载
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And we want to find the polynomial coefficients {a_0\cdots a_n}