Merge pull request #1216 from kenkoooo/pr/Aosanori/1106

merge #1106

Author: kenkoooo

atcoder-problems-frontend/src/pages/TablePage/AtCoderRegularTable.tsx

@@ -41,8 +41,9 @@ const getProblemHeaderAlphabet = (problem: MergedProblem, contest: Contest) => {
   if (
     problem.problem_index === "H" &&
     classifyContest(contest).startsWith("ABC")
-  )
-    return "Ex";
+  ) {
+    return "H/Ex";
+  }
   return problem.problem_index;
 };
 
@@ -89,6 +90,7 @@ const AtCoderRegularTableSFC: React.FC<Props> = (props) => {
           return [alphabet, status];
         })
       );
+
       const rowColor = combineTableColorList({
         colorMode,
         colorList: problemStatusList.map(({ cellColor }) => cellColor),
@@ -112,16 +114,13 @@ const AtCoderRegularTableSFC: React.FC<Props> = (props) => {
     );
 
   const headerList = props.contests
-    .flatMap((contest) =>
-      (props.contestToProblems.get(contest.id) ?? []).map((problem) =>
-        getProblemHeaderAlphabet(problem, contest)
-      )
-    )
+    .flatMap((contest) => {
+      const problems = props.contestToProblems.get(contest.id) ?? [];
+      return problems.map((p) => getProblemHeaderAlphabet(p, contest));
+    })
     .filter((alphabet) => alphabet.length > 0);
 
-  let header = Array.from(new Set(headerList)).sort();
-  if (header.includes("Ex"))
-    header = header.filter((c) => c != "Ex").concat("Ex");
+  const header = Array.from(new Set(headerList)).sort();
 
   return (
     <Row className="my-4">