import turtle

LARG = 800
ALT = 600

def f(x: int) -> int:
    return -(3/800)*(x**2)+300
# fim-def

def main():
    turtle.setup(LARG, ALT)
    turtle.up()
    ini_x = -LARG//2
    ini_y = f(ini_x)
    turtle.goto(ini_x, round(ini_y))
    turtle.down()

    for x in range(1-LARG//2, -1+LARG//2):
        y = f(x)
        turtle.goto(x, round(y))
    # fim-for

    turtle.done()
# fim-def

if __name__ == '__main__':
    main()