{"trustable":false,"sections":[{"title":"","value":{"format":"MD","content":"数学老师用你刚刚编写的程序验证了WNJXYK给出的回答,发现他全都是在口胡。老师很生气,后果很严重。于是,WNJXYK决定先跑为妙,他一下子跑出了很远觉得自己很安全就停下来休息了。\n\n我们把世界抽象为一个数轴,老师一开始在点N(0 ≤ N ≤ 100,000),WNJXYK会一直在点K(0 ≤ K ≤ 100,000) 休息,老师每秒钟有两种操作:\n1.走路:当前在X,下一秒可以在X+1或X-1\n2.闪现:当前在X,下一秒在2*X\n\n现在数学老师想知道,最早在什么时候才能抓住WNJXYK(到达他所在的位置)"}},{"title":"Input","value":{"format":"MD","content":"一行两个整数N,K"}},{"title":"Output","value":{"format":"MD","content":"一行一个整数,表示最少的时间"}},{"title":"Sample Input","value":{"format":"MD","content":"5 17"}},{"title":"Sample Output","value":{"format":"MD","content":"4"}},{"title":"Hint","value":{"format":"MD","content":"按照这个顺序,5-10-9-18-17,花费4秒"}}]}