import matplotlib.pyplot as plt

class Name:
    def __init__(self):
        self.__A = [1, 1]

    def Pn(self, a):
        self.__A = [self.__A[0] + a, self.__A[1]]

    def Pi(self, a):
        self.__A = [self.__A[0], self.__A[1] + a]

    def Mn(self, a):
        self.__A = [self.__A[0] * a, self.__A[1] * a]

    def Mi(self, a):
        self.__A = [-self.__A[1] * a, self.__A[0] * a]

    def go(self):
        plt.scatter(self.__A[0], self.__A[1])
        plt.xlim(-10,10)
        plt.ylim(-10,10)
        plt.grid()
        plt.show()