input: def IntList():
      """Design a data structure in Python to store integer values.
      The data structure should support adding a new value and finding the minimum value in the stored values.
      Example:
      >>> my_list = IntList()
      >>> my_list.add_value(10)
      >>> my_list.add_value(5)
      >>> my_list.add_value(20)
      >>> my_list.find_min()
      5
      """
output:     
      class IntList:
          def __init__(self):
              self.values = []
  
          def add_value(self, value: int):
              self.values.append(value)
  
          def find_min(self) -> int:
              if not self.values:
                  raise ValueError("No values stored")
              return min(self.values)
  