def check_Triangle(x1,y1,x2,y2,x3,y3):
     
    a = (x1*(y2-y3)+x2*(y3-y1)+x3*(y1-y2))   
    if a == 0: 
        return ('No') 
    else: 
        return ('Yes') 
def check_Triangle(x1, y1, x2, y, x3, y3):
    a = x1 * (y - y3) + x2 * (y3 - y1) + x3 * (y1 - y)
    if a == 0:
       
        return "No"
    else:
        return "Yes"