n,m=map(int,input().split())

if n==1:
  if m==1:
    print(2)
  elif m==2:
    print(2)
  else:
    print((m-2)*(m-3)//2+m+1)
  exit()
  
if m==1:
  print(0)
  exit()
if m==2:
  print(0)
  exit()
if m==3:
  if n==2:
    print(2)
  else:
    print(0)
  exit()

loop=[0,1]

while True:
  loop.append((loop[-1]+loop[-2]+1)%n)
  if loop[-1]==loop[-2]==0:
    break
  
loop=loop[1:]

cnt=[0]*n
cnt[0]=1
l=len(loop)

p=(m-2)//l
for i in loop:
  cnt[i]+=p
for i in range((m-2)%l):
  cnt[loop[i]]+=1
  
ans=0
last=(loop[(m-2)%l]-loop[(m-3)%l])%n
if last==0:
  ans+=1
last=(loop[(m-2)%l]-loop[(m-4)%l])%n
if last==0:
  ans+=1
last=(loop[(m-1)%l]-loop[(m-2)%l])%n
if last==0:
  ans+=1
  
for i in cnt:
  ans+=i*(i-1)//2
  
print(ans)