while True:
a,b=map(int,input().split())
if a== b== 0:
break
ans = 0
A,B = 1,2
if a <= A <=b:
ans+=1
if a<= B <=b:
ans+=1
while A+B <= b:
C = A+B
if C >= a:
ans+=1
A,B = B,C
print(ans)