Fixed train 25K: Quirke enrichment, seed=42, natural hard ratio

fixed_train/train_25K_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": 13733,
-    "sub": 11267
+    "add": 12545,
+    "sub": 12455
   },
   "split_counts": {
-    "add_has_SS": 3626,
-    "add_C0": 3669,
-    "add_has_UC": 5456,
-    "add_C5": 1467,
-    "sub_has_UB": 5713,
-    "add_C3": 2193,
-    "add_has_US": 4608,
-    "add_C4": 1800,
-    "add_C2": 2139,
-    "add_C7": 1102,
-    "sub_has_UD": 3219,
-    "add_C6": 1363,
-    "sub_MD_only": 2335,
-    "add_SA_only": 43
+    "add_C0": 1245,
+    "add_C2": 2423,
+    "add_C3": 2451,
+    "add_C4": 1982,
+    "add_C5": 1669,
+    "add_C6": 1528,
+    "add_C7": 1247,
+    "add_SA_only": 60,
+    "add_has_SS": 1185,
+    "add_has_UC": 6490,
+    "add_has_US": 4810,
+    "sub_B0": 2368,
+    "sub_B2": 2999,
+    "sub_B3": 2330,
+    "sub_B4": 1919,
+    "sub_B5": 1712,
+    "sub_B6": 1127,
+    "sub_MD_only": 2368,
+    "sub_has_UB": 6675,
+    "sub_has_UD": 3412
   }
 }