x = 400
y = 400

def setup():
    size(800,800)
    fill(155,155,255)

def draw():
    background(255)
    ellipse(x,y,25,25)

def keyPressed():
    global x,y
    if key == 'i':
        y = y - 2
    elif key == 'm':
        y = y + 2
    elif key == 'j':
        x = x - 2
    elif key == 'k':
        x = x + 2