{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"农夫知道一头牛的位置,想要抓住它。农夫和牛都于数轴上 ,农夫起始位于点 N(0\u003c\u003dN\u003c\u003d100000) ,牛位于点 K(0\u003c\u003dK\u003c\u003d100000) 。农夫有两种移动方式:\n1、从 X移动到 X-1或X+1 ,每次移动花费一分钟\n2、从 X移动到 2*X ,每次移动花费一分钟\n假设牛没有意识到农夫的行动,站在原地不。最少要花多少时间才能抓住牛?"}},{"title":"Input","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 一行: 以空格分隔的两个字母: \n \u003ci\u003eN\u003c/i\u003e 和 \n \u003ci\u003eK\u003c/i\u003e\n \u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 一行: 农夫抓住牛需要的最少时间,单位分钟\n \u003c/div\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e5 17\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e4\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 农夫使用最短时间抓住牛的方案如下: 5-10-9-18-17, 需要4分钟.\n \u003c/div\u003e"}}]}