input: Write a function to classify data based on score and level.
  assert classify([[18, 'Beginner'], [32, 'Intermediate'], [40, 'Advanced'], [12, 'Beginner'], [20, 'Intermediate']]) == {
   'Low/Beginner': [[18, 'Beginner'], [12, 'Beginner']],
   'Medium/Intermediate': [[32, 'Intermediate'], [20, 'Intermediate']],
   'High/Advanced': [[40, 'Advanced']]
  }
  assert classify([[22, 'Beginner'], [35, 'Intermediate'], [45, 'Advanced'], [10, 'Beginner'], [25, 'Intermediate']]) == {
   'Low/Beginner': [[10, 'Beginner']],
   'Medium/Intermediate': [[35, 'Intermediate'], [25, 'Intermediate']],
   'High/Advanced': [[45, 'Advanced']]
  }
  assert classify([[15, 'Beginner'], [30, 'Intermediate'], [42, 'Advanced'], [18, 'Beginner'], [25, 'Intermediate']]) == {
   'Low/Beginner': [[15, 'Beginner'], [18, 'Beginner']],
   'Medium/Intermediate': [[30, 'Intermediate'], [25, 'Intermediate']],
   'High/Advanced': [[42, 'Advanced']]
  }
output: def classify(data):
      result = {'Low/Beginner': [], 'Medium/Intermediate': [], 'High/Advanced': []}
      
      for score, level in data:
          if level == 'Beginner' and score <= 20:
              result['Low/Beginner'].append([score, level])
          elif level == 'Intermediate' and 20 < score <= 35:
              result['Medium/Intermediate'].append([score, level])
          elif level == 'Advanced' and score > 35:
              result['High/Advanced'].append([score, level])
      
      return result