Fix swapped task_type labels for tasks 16 and 17

Task 16 examples are economics/credit problems and task 17 examples are planimetry problems, but the task_type field had the two labels swapped across all 32 affected rows. Verified against the reference solution images. Also corrects the task type counts in the dataset card and adds an explicit task ID column to that table.

README.md

@@ -37,15 +37,15 @@ The dataset includes three types of images for each solution:
 
 ### Task Types
 
-| Task Type | Count |
-|-----------|-------|
-| Financial mathematics | 15 |
-| Logarithmic inequalities | 19 |
-| Number theory problem | 16 |
-| Planimetric problem | 17 |
-| Problem with parameters | 16 |
-| Stereometric problem | 18 |
-| Trigonometric equations | 21 |
+| Task ID | Task Type | Count |
+|---------|-----------|-------|
+| 13 | Trigonometric equations | 21 |
+| 14 | Stereometric problem | 18 |
+| 15 | Logarithmic inequalities | 19 |
+| 16 | Financial mathematics | 17 |
+| 17 | Planimetric problem | 15 |
+| 18 | Problem with parameters | 16 |
+| 19 | Number theory problem | 16 |
 
 ### Score Distribution
 

data/train-00000-of-00001.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:1fcb8a8a75445e896cbb70257f77f45dbbdea5a901162d44195ca4b37cab27c2
-size 59500921
+oid sha256:fabac73fd9387a53ca29732035ea24d350acec170a9c36bb56ff97afb10331d4
+size 61067532