from pt4 import *
import sys
from math import pow
step=0.008
def FunctionMax(x1,x2):
    return 2*pow(x1,3)+x2*x1+x2

func_list=list()


def FindMax(step):
    F_max=-sys.maxsize
    x1=0
    x2=-2
    while x1 <= 2:
        x2=-2
        while x2 <= 4:
            temp_list=list()
            y=FunctionMax(x1, x2)
            if y>F_max:
                F_max=y
                temp_list.append(x1)
                temp_list.append(x2)
                temp_list.append(y)
                func_list.append(temp_list)
            x2=x2+step
        x1=x1+step
    return F_max

res=FindMax(step)
print(res,'\n')