P9510 题解插图及源码

题解链接：洛谷P9510 「STA - R3」高维立方体 题解

插图一

源码：

\documentclass{standalone}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
    \draw[->] (0, 0) -- (6, 0);
    \draw[->] (0, 0) -- (0, 9);
    \node[below = 4pt, left] at (0, 0) { $O$ };
    \node[below] at (6, 0) { $x$ };
    \node[left] at (0, 9) { $y$ };
    \draw[very thin, color = gray] (0, 9) grid (6, 0);

    \draw[blue, line width = 1pt] (0, 0) -- (5, 0) -- (5, 8) -- (0, 8) -- (0, 0);
    \draw[blue, line width = 1pt] (0, 1) -- (1, 1) -- (1, 0);
    \draw[blue, line width = 1pt] (2, 0) -- (2, 1) -- (1, 1);
    \draw[blue, line width = 1pt] (2, 1) -- (2, 3);
    \draw[blue, line width = 1pt] (0, 3) -- (5, 3);
    \node[below, red] at (0.5, 0) { $1$ };
    \node[below, red] at (1.5, 0) { $1$ };
    \node[below, red] at (3.5, 0) { $3$ };
    \node[left, red] at (0, 2) { $2$ };
    \node[above, red] at (2.5, 8) { $5$ };
\end{tikzpicture}
\end{document}

---

插图二

源码：（不会画立体图，目前只能用坐标来画，比较蠢）

\documentclass{standalone}
\usepackage{tikz}

\begin{document}
    \begin{tikzpicture}[line width = 0.6pt]
        % \draw[very thin, color = gray] (0, 8) grid (8, 0);
        \draw (0, 0) -- (3, 0) -- (3, 3) -- (0, 3) -- cycle;
        \draw (0, 3) -- (1.5, 4.5) -- (4.5, 4.5) -- (3, 3);
        \draw (4.5, 4.5) -- (4.5, 3.5) -- (6.5, 3.5) -- (6.5, 1.5);
        \draw (3, 0) -- (5, 0) -- (5.5, 0.5) -- (6.5, 1.5);
        \draw (5.5, 0.5) -- (5.5, 1.5) -- (3.5, 1.5) -- (3, 1);
        \draw (3, 1) -- (5, 1);
        \draw (4, 0) -- (4, 1) -- (4.5, 1.5);
        \draw (5, 0) -- (5, 1) -- (5.5, 1.5);
        \draw (3.5, 1.5) -- (3.5, 2.5) -- (4.5, 3.5);
        \draw (3.5, 2.5) -- (5.5, 2.5) -- (5.5, 1.5);
        \draw (5.5, 2.5) -- (6.5, 3.5);
        \draw[dotted] (0, 0) -- (1.5, 1.5) -- (4.5, 1.5);
        \draw[dotted] (1.5, 1.5) -- (1.5, 4.5);
        % \draw[dotted] (4.5, 1.5) -- (6.5, 1.5);
        \draw[dotted] (4, 0) -- (4.5, 0.5);
        \draw[dotted] (3.5, 0.5) -- (5.5, 0.5);
        \draw[dotted] (3, 0) -- (3.5, 0.5) -- (3.5, 1.5);
        \draw[dotted] (4.5, 0.5) -- (4.5, 1.5);
        % \draw[dotted] (4.5, 4.5) -- (4.5, 1.5);
        \node[below, red] at (1.5, 0) { $3$ };
        \node[below, red] at (3.5, 0) { $1$ };
        \node[below, red] at (4.5, 0) { $1$ };
        \node[below, red] at (6.1, 1) { $2$ };
    \end{tikzpicture}

    \begin{tikzpicture}[line width = 0.6pt]
        % \draw[very thin, color = gray] (0, 8) grid (8, 0);
        \draw (0, 0) -- (3, 0) -- (3, 3) -- (0, 3) -- cycle;
        \draw (0, 3) -- (1.5, 4.5) -- (4.5, 4.5) -- (3, 3);
        \draw (4.5, 4.5) -- (4.5, 3.5) -- (6.5, 3.5) -- (6.5, 1.5);
        \draw (3, 0) -- (5, 0) -- (5.5, 0.5) -- (6.5, 1.5);
        \draw (5.5, 0.5) -- (5.5, 1.5) -- (3.5, 1.5) -- (3, 1);
        \draw (3, 1) -- (5, 1);
        \draw (4, 0) -- (4, 1) -- (4.5, 1.5);
        \draw (5, 0) -- (5, 1) -- (5.5, 1.5);
        \draw (3.5, 1.5) -- (3.5, 2.5) -- (4.5, 3.5);
        \draw (3.5, 2.5) -- (5.5, 2.5) -- (5.5, 1.5);
        \draw (5.5, 2.5) -- (6.5, 3.5);
        \draw[dotted] (0, 0) -- (1.5, 1.5) -- (4.5, 1.5);
        \draw[dotted] (1.5, 1.5) -- (1.5, 4.5);
        % \draw[dotted] (4.5, 1.5) -- (6.5, 1.5);
        \draw[dotted] (4, 0) -- (4.5, 0.5);
        \draw[dotted] (3.5, 0.5) -- (5.5, 0.5);
        \draw[dotted] (3, 0) -- (3.5, 0.5) -- (3.5, 1.5);
        \draw[dotted] (4.5, 0.5) -- (4.5, 1.5);
        % \draw[dotted] (4.5, 4.5) -- (4.5, 1.5);
        \node[below, red] at (1.5, 0) { $3$ };
        \node[below, red] at (3.5, 0) { $1$ };
        \node[below, red] at (4.5, 0) { $1$ };
        \node[below, red] at (6.1, 1) { $2$ };
        \draw[densely dashed, red, line width = 1pt] (3, 3) -- (5, 3) -- (6.5, 4.5) -- (4.5, 4.5) -- cycle;
        \draw[densely dashed, red, line width = 1pt] (3, 2) -- (5, 2) -- (6.5, 3.5) -- (4.5, 3.5) -- cycle;
        \draw[densely dashed, red, line width = 1pt] (3, 3) -- (3, 2);
        \draw[densely dashed, red, line width = 1pt] (5, 3) -- (5, 2);
        \draw[densely dashed, red, line width = 1pt] (6.5, 4.5) -- (6.5, 3.5);
        \draw[densely dashed, red, line width = 1pt] (4.5, 4.5) -- (4.5, 3.5);
    \end{tikzpicture}
\end{document}