feat: add the text_hard col

src/populate.py

@@ -184,6 +184,7 @@ U_MATH_COLUMNS_DICT = {
     "u_math_acc": Field("U-MATH Acc", "rate", never_hidden=True, tags=["default"]),
     "u_math_text_acc": Field("U-MATH Text Acc", "rate", tags=["default", "text"]),
     "u_math_visual_acc": Field("U-MATH Visual Acc", "rate", tags=["default", "visual"]),
+    "u_math_text_hard_acc": Field("U-MATH TextHard Acc", "rate", tags=["default", "text"]),
     "differential_calc_acc": Field("Diff Calc Acc", "rate", displayed_by_default=False, tags=["subjects"]),
     "differential_calc_text_acc": Field("Diff Calc Text Acc", "rate", displayed_by_default=False, tags=["text"]),
     "differential_calc_visual_acc": Field(
@@ -317,6 +318,8 @@ def get_u_math_leaderboard_df(use_pretty_names: bool = True, add_meta: bool = Tr
         df[col + "_visual_acc"] = df[col].apply(lambda x: x[2])
         del df[col]
 
+    df["u_math_text_hard_acc"] = (df["differential_calc_text_acc"] + df["integral_calc_text_acc"] + df["multivariable_calculus_text_acc"] + df["sequences_series_text_acc"]) / 4
+
     # Sort and add rank
     df = df.sort_values(by=["u_math_acc"], ascending=False)
     df["rank"] = range(1, len(df) + 1)