input: 
  def create_int_list() -> 'IntList':
      """ Create and return an instance of a data structure that allows storing integer values.
      The data structure should have methods to add a value and to find the minimum value stored.
      >>> int_list = create_int_list()
      >>> int_list.add_value(5)
      >>> int_list.add_value(3)
      >>> int_list.add_value(7)
      >>> int_list.find_min()
      3
      >>> int_list.add_value(1)
      >>> int_list.find_min()
      1
      """
      class IntList:
          def __init__(self):
              self.values = []
         
          def add_value(self, value):
              self.values.append(value)
          
          def find_min(self):
              return min(self.values)
      return IntList()
  
output:     class IntList:
          def __init__(self):
              self.values = []
         
          def add_value(self, value):
              self.values.append(value)
          
          def find_min(self):
              return min(self.values)
      return IntList()