std_input = input()
mi,ma = std_input.split(" ")

cnt = 0
cnt_list=[0]
for l in range(int(mi),int(ma)+1):
    for i in range(-round(int(l)**(1/2)),round(int(l)**(1/2))+1):

        for j in range(-round(int(l)**(1/2)),round(int(l)**(1/2))+1):
            if int(i)**2 + int(j)**2 == int(l):
                cnt +=1

    cnt_list.append(cnt)

    cnt = 0
print(max(cnt_list))