import math

class StringToNumber:
    def convert(self, string):
        if string == "one":
            return 1
        elif string == "two":
            return 2
        elif string == "three":
            return 3
        elif string == "four":
            return 4
        elif string == "five":
            return 5
        elif string == "six":
            return 6
        elif string == "seven":
            return 7
        elif string == "eight":
            return 8
        elif string == "nine":
            return 9
        else:
            return string
        
class Shape():
    #1 Mark for using default values to overload the method 
    def __init__(self, val1, val2 = None, val3 = None):
        strToNum = StringToNumber()
        #1 Mark for handling both numeric values and string values
        val1 = strToNum.convert(val1)
        val2 = strToNum.convert(val2)
        val3 = strToNum.convert(val3)
        
        #1 Mark for condition that checks against default values to determine what action to take
        if val2 == None:
            self.__shape = Circle(val1)
        elif val3 == None:
            self.__shape = Rectangle(val1, val2)
        else:
            self.__shape = Triangle(val1, val2, val3)
    
    def perimeter(self):
        self.__shape.perimeter()
    
    def area(self):
        self.__shape.area()
    
class Triangle:
    def __init__(self, a, b, c):
        self.__a = a
        self.__b = b
        self.__c = c
        
    def perimeter(self):
        perimeter = (self.__a + self.__b + self.__c)
        print("This triangle has a perimeter of " + str(perimeter))
        
    def area(self):
        perimeter = (self.__a + self.__b + self.__c)
        p = perimeter/2
        area = math.sqrt(p*(p-self.__a)*(p-self.__b)*(p-self.__c))
        print("This triangle has an area of " + str(area))
            
class Rectangle:
    def __init__(self, width, height):
        self.__width = width
        self.__height = height
	
    def perimeter(self):
        perimeter = 2 * (self.__width + self.__height)
        print("This rectangle has a perimeter of " + str(perimeter))
        
    def area(self):
        area = (self.__width*self.__height)
        print("This rectangle has an area of " + str(area))
               
class Circle:
    def __init__(self, radius):
        self.__radius = radius
        
    def perimeter(self):
        perimeter = 2*math.pi*self.__radius
        print("This circle has a perimeter of " + str(perimeter))
        
    def area(self):
        area = math.pi*(self.__radius**2)
        print("This circle has an area of " + str(area))
		
def main():
    #1 Mark if a circle is created by each of these constructors
    circle1 = Shape(2)
    circle2 = Shape("three")
    
    #1 Mark if a rectangle is created by each of these constructors
    rectangle1 = Shape(5, 3)
    rectangle2 = Shape("seven", "two")
    
    #1 Mark if a triangle is created by each of these constructors
    triangle1 = Shape("four", "six", "nine")
    triangle2 = Shape(3, 6, 5)
    
    circle1.perimeter() #1 Mark if this line prints "This circle has a perimeter of 12.5663706..."
    circle1.area() #1 Mark if this line prints "This circle has an area of 12.5663706..."
    
    circle2.perimeter() #1 Mark if this line prints "This circle has a perimeter of 18.84955592..."
    circle2.area() #1 Mark if this line prints "This circle has an area of 28.27433388..."
    
    rectangle1.perimeter() #1 Mark if this line prints "This rectangle has a perimeter of 16"
    rectangle1.area() #1 Mark if this line prints "This rectangle has an area of 15"
    
    rectangle2.perimeter() #1 Mark if this line prints "This rectangle has a perimeter of 18"
    rectangle2.area() #1 Mark if this line prints "This rectangle has an area of 14"
    
    triangle1.perimeter() #1 Mark if this line prints "This triangle has a perimeter of 19"
    triangle1.area() #1 Mark if this line prints "This triangle has an area of 9.5622957..."
    
    triangle2.perimeter() #1 Mark if this line prints "This triangle has a perimeter of 14"
    triangle2.area() #1 Mark if this line prints "This triangle has an area of 7.48331477..."
    
    input()
    
if __name__ == '__main__':
    main()