Update README

README.md

@@ -107,7 +107,7 @@ metadata_dataset = load_dataset(
 
 ## ✅ Quality Control
 
-Answers were independently checked and corrected where necessary using complementary model-based solving, executable verification, mathematical equivalence checking, and manual review. Problems without a single well-defined answer were excluded from the release.
+Answers were independently checked and corrected where necessary using complementary model-based solving, executable verification, mathematical equivalence checking, and manual review. Of the 2,940 problems used in the paper's curriculum, 26 were excluded from this release because they were ambiguous, under-specified, or did not admit a single well-defined answer. The final release therefore contains 2,914 problems.
 
 The dataset preserves the generated curriculum order. Some semantically similar or repeated problems may remain, reflecting the data distribution encountered during co-training.