Fixed train 50K: Quirke enrichment, seed=42, natural hard ratio

fixed_train/train_50K_seed42_meta.json

@@ -3,26 +3,32 @@
   "seed": 42,
   "n_digits": 6,
   "ops": "add_sub",
-  "hard_ratio": 0.1,
   "enrichment": "quirke_appendix_d",
+  "hard_ratio": "natural",
   "op_counts": {
-    "add": 27634,
-    "sub": 22366
+    "sub": 24857,
+    "add": 25143
   },
   "split_counts": {
-    "add_has_US": 9351,
-    "add_C4": 3670,
-    "sub_MD_only": 4611,
-    "add_C5": 2942,
-    "add_has_SS": 7311,
-    "add_C0": 7417,
-    "add_has_UC": 10866,
-    "add_C6": 2761,
-    "sub_has_UB": 11166,
-    "add_C3": 4244,
-    "sub_has_UD": 6589,
-    "add_C2": 4327,
-    "add_C7": 2273,
-    "add_SA_only": 106
+    "add_C0": 2220,
+    "add_C2": 4805,
+    "add_C3": 4869,
+    "add_C4": 4219,
+    "add_C5": 3311,
+    "add_C6": 3172,
+    "add_C7": 2547,
+    "add_SA_only": 140,
+    "add_has_SS": 2080,
+    "add_has_UC": 13657,
+    "add_has_US": 9266,
+    "sub_B0": 4124,
+    "sub_B2": 6108,
+    "sub_B3": 4590,
+    "sub_B4": 4091,
+    "sub_B5": 3523,
+    "sub_B6": 2421,
+    "sub_MD_only": 4124,
+    "sub_has_UB": 14124,
+    "sub_has_UD": 6609
   }
 }