h,w=map(int,input().split())
if h==0 or w==0:
    print(0)
    quit()
w=abs(w)
ans=h
t=1
l=1
k=10**9+7
while w>l:
    if w-l<t:
        ans+=t*(w-l)
        if w-l>k:
            ans-=w-l-k
        break
    if l+t>h:
        k=h-l+1
        ans+=(t*t-(l+t-1-h))*((w-l)//t)
        l+=((w-l)//t)*t
    else:
        ans+=t*t
        l+=t
        t+=1
print(ans)