diff --git a/joj3_config_generator/models/result.py b/joj3_config_generator/models/result.py
index 7338c7a..91ef685 100644
--- a/joj3_config_generator/models/result.py
+++ b/joj3_config_generator/models/result.py
@@ -132,7 +132,7 @@ class Parser(BaseModel):
     def validate_with(cls, v: Any) -> Dict[str, Any]:
         if isinstance(v, BaseModel):
             return v.model_dump(by_alias=True)
-        raise ValueError(f"Must be a BaseModel instance")
+        raise ValueError("Must be a BaseModel instance")
 
 
 class StageDetail(BaseModel):
@@ -168,7 +168,7 @@ class Config(BaseModel):
 
 
 class DummyConfig(BaseModel):
-    score: Optional[int] = None
+    score: int = 0
     comment: Optional[str] = None
     force_quit_on_not_accepted: Optional[bool] = Field(
         False, serialization_alias="forceQuitOnNotAccepted"
@@ -176,7 +176,7 @@ class DummyConfig(BaseModel):
 
 
 class DiffOutputConfig(BaseModel):
-    score: Optional[int] = None
+    score: int = 100
     file_name: str = Field("", serialization_alias="fileName")
     answer_path: str = Field("", serialization_alias="answerPath")
     force_quit_on_diff: Optional[bool] = Field(
diff --git a/joj3_config_generator/processers/task.py b/joj3_config_generator/processers/task.py
index 84575f8..ddca853 100644
--- a/joj3_config_generator/processers/task.py
+++ b/joj3_config_generator/processers/task.py
@@ -4,6 +4,7 @@ from pathlib import Path
 from typing import Any, Callable, Dict, List, Tuple
 
 from joj3_config_generator.models import result, task
+from joj3_config_generator.models.common import Memory, Time
 from joj3_config_generator.models.const import JOJ3_CONFIG_ROOT
 
 
@@ -78,11 +79,15 @@ def get_executor_with(
             copy_out=copy_out_files,
             copy_in_cached={file: file for file in cached},
             copy_out_cached=file_export,
-            cpu_limit=task_stage.limit.cpu,
-            clock_limit=2 * task_stage.limit.cpu,
-            memory_limit=task_stage.limit.mem,
-            stderr=result.Collector(name="stderr"),
-            stdout=result.Collector(name="stdout"),
+            cpu_limit=Time(task_stage.limit.cpu),
+            clock_limit=2 * Time(task_stage.limit.cpu),
+            memory_limit=Memory(task_stage.limit.mem),
+            stderr=result.Collector(
+                name="stderr", pipe=True, max=Memory(task_stage.limit.stderr)
+            ),
+            stdout=result.Collector(
+                name="stdout", pipe=True, max=Memory(task_stage.limit.stdout)
+            ),
         ),
         cases=[],
     )