diff --git a/ccf_parser/results.py b/ccf_parser/results.py
index d6e17d2..caa591b 100644
--- a/ccf_parser/results.py
+++ b/ccf_parser/results.py
@@ -1,6 +1,6 @@
 from typing import Dict, List
 
-from pydantic import BaseModel
+from pydantic import BaseModel, computed_field
 
 from ccf_parser.status import Status
 
@@ -16,3 +16,14 @@ class CheckPointResult(BaseModel):
 class JudgingResult(BaseModel):
     player_order: str
     problems_result: Dict[str, List[CheckPointResult]]  # key: Problem.name
+
+    @computed_field
+    @property
+    def sum_score(self) -> int:
+        score: int = 0
+
+        for problem_result in self.problems_result.values():
+            for ckpt in problem_result:
+                score += ckpt.score
+
+        return score