x1, y1, x2, y2, x3 = map(int, input().split())
a = (x1, y1)
b = (x2, y2)
c = (x3, 0)

def s(a, b):
    ax, ay = a
    bx, by = b
    return abs(ax * by - ay * bx)

print('Yes' if s(a, c) == s(b, c) else 'No')