3.1 single thread, use 14s, get correct answer

.idea/compiler.xml

src/main/java/org/example/Main.java

src/main/java/org/example/answerSheet/AnswerSheet.java

src/main/java/org/example/grader/ExamGrader.java

src/main/java/org/example/grader/QuestionGrader.java

...in/java/org/example/grader/judgeStrategy/FixStrategy.java

.../java/org/example/grader/judgeStrategy/JudgeStrategy.java

...ava/org/example/grader/judgeStrategy/NothingStrategy.java

...ava/org/example/grader/judgeStrategy/PartialStrategy.java

...org/example/grader/judgeStrategy/ProgrammingStrategy.java

...rg/example/grader/judgeStrategy/SingleChoiceStrategy.java

...grader/judgeStrategy/compileStrategy/CompileStrategy.java

...er/judgeStrategy/compileStrategy/JavaCompileStrategy.java

...grader/judgeStrategy/executeStrategy/ExecuteStrategy.java

...er/judgeStrategy/executeStrategy/JavaExecuteStrategy.java

src/test/resources/cases/answers/1-1.json

src/test/resources/cases/answers/1-2.json

src/test/resources/cases/answers/1-3.json

src/test/resources/cases/answers/2-1.json

src/test/resources/cases/answers/2-2.json