x,y=map(int,input().split())
a=[0 for i in range(y+1)]
for xx in range(1,int(y**0.5)+1):
    for yy in range(int(y**0.5)+1):
        d=xx**2+yy**2
        if (d>=x) and (d<=y):
            a[d]+=1
print(max(a)*4)