a,b,c,d = map(int,input().split())
D = (a-c)**2 -8*(b-d)
if D < 0:
    print('No')
elif d == 0:
    print('Yes')
else:
    p = (a+c)/2
    t = (-a-c+D**0.5)/4
    q = t**2 + a*t +b -p*t
    ans = [p,q]
    print(*ans)