Untitled

def f(L, x1, v1, x2, v2):
    if x1 != x2 and v1 == v2 == 0:
        return "NO", 0
    
    times = []

    if v1 != v2:
        for k in [-1, 0, 1]:
            times.append((k*L + x2 - x1)/(v1 - v2))
    for k in [-1, 0, 1]:
        times.append((k * L - x1 - x2) / (v1 + v2))

    t_min = None
    for t in times:
        if t >= 0:
            if t_min is None:
                t_min = t
            else:
                if t < t_min:
                    t_min = t

    return "YES", t_min

L, x1, v1, x2, v2 = map(int, input().split())
ans, t_min = f(L, x1, v1, x2, v2)
print(ans)
if ans == "YES":
    print(t_min)