{"trustable":false,"sections":[{"title":"","value":{"format":"MD","content":"![题面1.png](https://i.loli.net/2019/08/20/kypmExKHX7vG3JQ.png)"}},{"title":"Input","value":{"format":"MD","content":"![输入1.png](https://i.loli.net/2019/08/20/wB7Y231H6hXftaI.png)"}},{"title":"Output","value":{"format":"MD","content":"![输出1.png](https://i.loli.net/2019/08/20/q43LBdD95omfu8C.png)"}},{"title":"Example","value":{"format":"MD","content":"\u003ctable border\u003d\"1px solid\" width\u003d\"100%\" cellpadding\u003d\"4px\" cellspacing\u003d\"0px\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003cth width\u003d\"50%\"\u003eSample Input\u003c/th\u003e\n \u003cth width\u003d\"50%\"\u003eSample Output\u003c/th\u003e\n \u003c/tr\u003e\n \u003ctr\u003e\n \u003ctd valign\u003d\"top\"\u003e\u003ccode\u003e\n20 2\u003cbr\u003e\n20 2\u003cbr\u003e\n0 0\u003cbr\u003e\n \u003cbr\u003e\u003c/code\u003e\u003c/td\u003e\n \u003ctd valign\u003d\"top\"\u003e\u003ccode\u003e\n21\u003cbr\u003e\n21\u003cbr\u003e\n \u003cbr\u003e\u003c/code\u003e\u003c/td\u003e\n \u003c/tr\u003e\n \u003c/tbody\u003e\n\u003c/table\u003e"}}]}