Update README.md

Author: EauDeData

README.md

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-An empty readme file
+# AnyScript — Training Data Guide
+
+This guide explains how to use the provided `train_set_labels.json` metadata to prepare training inputs for both competition tracks:
+- **Intra-Book Track** (page retrieval)
+- **Extra-Book Track** (book retrieval)
+
+## 📦 Metadata Format
+
+The file `train_set_labels.json` maps authors to their books and pages:
+
+```json
+{
+  "AuthorID_1": {
+      "BookID_A": ["page_0001", "page_0002", ...],
+      "BookID_B": ["page_0101", "page_0102", ...]
+  },
+  "AuthorID_2": { ... },
+  ...
+}