Polygon 导出的 zip 中，每道题目需要有如下结构： You need to prepare files with this structure for each problem:

• 题目解析后，可勾选并打包为 CSGOJ 支持的导入格式。 After parsing the problem, you can select and pack it into a format supported by CSGOJ.
• 评测类型下拉框与题目编辑页的 spj（标准 / 特判 / 交互）一致，决定打包测例时是否包含 tpj.cc（来自 check.cpp 或 interactor）。 The judge-type select matches problem edit spj (standard / special / interactive) and controls whether tpj.cc (from check.cpp or interactor) is included when packing test data.
• 若存在 statements/.pdf/<语言>/problem.pdf，「题面」列可选导入后优先使用 PDF 或 LaTeX 正文（PDF 打入导入包内 TEST_* / pdf_desc，与评测数据同目录；仅 use_pdf 开关不同）。勾选题目后可用工具栏「正文 / PDF」组批量切换。 If statements/.pdf/.../problem.pdf exists, the Statement column chooses PDF vs LaTeX; PDFs are packed under TEST_* / pdf_desc. Select rows and use the LaTeX/PDF batch group.
• 插图转换基于 \includegraphics 匹配，不保证全部成功，文件名需为数字、字母、下划线、减号，后跟常见图像扩展名，不支持 PDF 格式的插图，导入后注意检查。 Image conversion is based on \includegraphics matching and is not guaranteed to be fully successful. The file name should consist of numbers, letters, underscores, hyphens, and common image extensions. PDF format images are not supported. Please check after import.