除以二 - Problem

#5721. 除以二

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This problem is prepared by xiaowuc1 .

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

给定两个整数 $A$ 和 $B$。你希望通过执行一系列操作将 $A$ 转换为 $B$。你只能执行以下操作：

将 $A$ 除以 2，但前提是 $A$ 是偶数。
将 $A$ 加 1。

将 $A$ 转换为 $B$ 所需的最少操作次数是多少？

输入格式

输入为一行，包含两个整数 $A$ 和 $B$，其中 $1 \le A, B \le 10^9$。

输出格式

在一行中输出所需的最少操作次数，作为一个整数。

样例

样例输入 1

103 27

样例输出 1

样例输入 2

3 8

样例输出 2

Figure 1. Operations on A

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