n,m = input().strip().split(' ')
n,m = [int(n),int(m)]
c=0
if m%2!=0 and m>2:
    c+=1
while m>1:
    print('2') 
    m=m//2
    c+=1
if n%2!=0 and n>2:
    c=c+1
while n>1:
    n=n//2
    c+=1
    
    
    
    
    
print(c)