x,y = map(int,input().split())
cnt = 0
d = 1
k = 1
X = x
while X!=y:
z = 0
if X < x+(d*k):
for i in range(X,x+(d*k)+1,1):
# print(i,end=" ")
z = i
if i ==y:
break
cnt+=1
else:
cnt-=1
else:
for i in range(X,x+(d*k)-1,-1):
# print(i,end=" ")
z = i
if i ==y:
break
cnt+=1
else:
cnt-=1
# print()
X = z
k*=-1
d*=2
print(cnt)