input.json

{
  "questionsSize": 10,
  "questions": [
    {
      "id": "Q1",
      "difficulty" : "easy",
      "marks": 1
    },
    {
      "id": "Q2",
      "difficulty" : "easy",
      "marks": 2
    },{
      "id": "Q3",
      "difficulty" : "medium",
      "marks": 2
    },{
      "id": "Q4",
      "difficulty" : "hard",
      "marks": 9
    },{
      "id": "Q5",
      "difficulty" : "easy",
      "marks": 3
    },{
      "id": "Q6",
      "difficulty" : "hard",
      "marks": 7
    },{
      "id": "Q7",
      "difficulty" : "medium",
      "marks": 3
    },{
      "id": "Q8",
      "difficulty" : "easy",
      "marks": 3
    },{
      "id": "Q9",
      "difficulty" : "medium",
      "marks": 5
    },{
      "id": "Q10",
      "difficulty" : "hard",
      "marks": 5
    }
  ],
  "requirements" : {
    "total": 20,
    "easy": 25,
    "medium" : 50,
    "hard": 25
  }
}