from collections import defaultdict
X,Y=map(int,input().split())
Y+=1
sX=int(Y**.5)+1
sY=int(Y**.5)+1
cnt=defaultdict(int)
for x in range(-sX,sX+1):
    for y in range(-sY,sY+1):
        cnt[x*x+y*y]+=1
ans=max(cnt[i] for i in range(X,Y))
print(ans)