a, b, c, d = map(int, input().split())
if (a - c) * (a - c) < 8 * (b - d):
    print("No")
else:
    if (a - c) * (a - c) == 8 * (b - d):
        print("Yes")
    else:
        p = (a + c) / 2
        q = (b + d) / 2
        print(p, q)