xst = float(input("start value for x:  "))

xend = float(input("end value for x:  "))

step = float(input(" input step: "))
#------------------------------------------
x = xst

if x>xend :
    print("it is not correct")

while x<=xend :
    y=x**2#512*x**10-1280*x**8-400*x**4+5*x**2-1
    print("|{:^10}|{:^20}|".format('{:5g}'.format(x),'{:15g}'.format(y)))
    x = x +step
#---------------------------------------------------
x = xst
ymin=x**2#512*x**10-1280*x**8-400*x**4+5*x**2-1
ymax = ymin
while x<=xend :
    y=x**2#512*x**10-1280*x**8-400*x**4+5*x**2-1
    if ymin > y:
        ymin = y
    if ymax < y :
      ymax = y
    x = x +step
print(ymax, ymin)
#-----------------------------------------------------------------------
x = xst
while x<=xend :
    y = x**2#512*x**10-1280*x**8-400*x**4+5*x**2-1
    a= ((y-ymin)*70)/(ymax-ymin)
    a = round(a)
    if (ymax<0) or (ymin> 0):
        print('|{:^10}|'.format('{:5g}'.format(x))+' '*(a-1)+'*')
        if ymin==0 :
            ptint('_'*70)
    else:
        a0= round(((0-ymin)*70)/(ymax-ymin))
        if a0<a :
            print('|{:^10}|'.format('{:5g}'.format(x))+(a0-1)*' '+'|'+(a-a0-2)*' '+'*')
        if a0==a :
            print('|{:^10}|'.format('{:5g}'.format(x))+' '*(a-1)+'*')
        if a0>a :
            print('|{:^10}|'.format('{:5g}'.format(x))+(max(a-1,0))*' '+'*'+(a0-max(a-1,0)-2)*' '+'|')

    #print('|{:^10}|'.format('{:5g}'.format(x))+' '*(a-1)+'*')
    x = x +step