302526: CF488B. Candy Boxes
Memory Limit:256 MB
Time Limit:1 S
Judge Style:Text Compare
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Description
Candy Boxes
题意翻译
有一个长度为 $4$ 的序列 $a$,满足 $a_1\le a_2\le a_3\le a_4$,并且$\frac{a_2+a_3}{2}=\frac{a_1+a_2+a_3+a_4}{4}=a_4-a_1$ 。 给定 $a$ 中的 $n$ 个数,求一种 $a$ 的构造。 如果存在解,输出``YES``并用任意的顺序给出没有给定的数字。 如果不存在解,输出``NO``。 有多组数据。 by [Error_Eric](https://www.luogu.com.cn/user/217300).题目描述
There is an old tradition of keeping $ 4 $ boxes of candies in the house in Cyberland. The numbers of candies are special if their arithmetic mean, their median and their range are all equal. By definition, for a set $ {x_{1},x_{2},x_{3},x_{4}} $ ( $ x_{1}<=x_{2}<=x_{3}<=x_{4} $ ) arithmetic mean is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/4ced3a9ae4181924c136bcc46ede19844528fdef.png), median is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/2d7e14bfd580007a1d694763c07f2437bb7e66e6.png) and range is $ x_{4}-x_{1} $ . The arithmetic mean and median are not necessary integer. It is well-known that if those three numbers are same, boxes will create a "debugging field" and codes in the field will have no bugs. For example, $ 1,1,3,3 $ is the example of $ 4 $ numbers meeting the condition because their mean, median and range are all equal to $ 2 $ . Jeff has $ 4 $ special boxes of candies. However, something bad has happened! Some of the boxes could have been lost and now there are only $ n $ ( $ 0<=n<=4 $ ) boxes remaining. The $ i $ -th remaining box contains $ a_{i} $ candies. Now Jeff wants to know: is there a possible way to find the number of candies of the $ 4-n $ missing boxes, meeting the condition above (the mean, median and range are equal)?输入输出格式
输入格式
There is an old tradition of keeping $ 4 $ boxes of candies in the house in Cyberland. The numbers of candies are special if their arithmetic mean, their median and their range are all equal. By definition, for a set $ {x_{1},x_{2},x_{3},x_{4}} $ ( $ x_{1}<=x_{2}<=x_{3}<=x_{4} $ ) arithmetic mean is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/4ced3a9ae4181924c136bcc46ede19844528fdef.png), median is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/2d7e14bfd580007a1d694763c07f2437bb7e66e6.png) and range is $ x_{4}-x_{1} $ . The arithmetic mean and median are not necessary integer. It is well-known that if those three numbers are same, boxes will create a "debugging field" and codes in the field will have no bugs. For example, $ 1,1,3,3 $ is the example of $ 4 $ numbers meeting the condition because their mean, median and range are all equal to $ 2 $ . Jeff has $ 4 $ special boxes of candies. However, something bad has happened! Some of the boxes could have been lost and now there are only $ n $ ( $ 0<=n<=4 $ ) boxes remaining. The $ i $ -th remaining box contains $ a_{i} $ candies. Now Jeff wants to know: is there a possible way to find the number of candies of the $ 4-n $ missing boxes, meeting the condition above (the mean, median and range are equal)?
输出格式
There is an old tradition of keeping $ 4 $ boxes of candies in the house in Cyberland. The numbers of candies are special if their arithmetic mean, their median and their range are all equal. By definition, for a set $ {x_{1},x_{2},x_{3},x_{4}} $ ( $ x_{1}<=x_{2}<=x_{3}<=x_{4} $ ) arithmetic mean is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/4ced3a9ae4181924c136bcc46ede19844528fdef.png), median is ![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF488B/2d7e14bfd580007a1d694763c07f2437bb7e66e6.png) and range is $ x_{4}-x_{1} $ . The arithmetic mean and median are not necessary integer. It is well-known that if those three numbers are same, boxes will create a "debugging field" and codes in the field will have no bugs. For example, $ 1,1,3,3 $ is the example of $ 4 $ numbers meeting the condition because their mean, median and range are all equal to $ 2 $ . Jeff has $ 4 $ special boxes of candies. However, something bad has happened! Some of the boxes could have been lost and now there are only $ n $ ( $ 0<=n<=4 $ ) boxes remaining. The $ i $ -th remaining box contains $ a_{i} $ candies. Now Jeff wants to know: is there a possible way to find the number of candies of the $ 4-n $ missing boxes, meeting the condition above (the mean, median and range are equal)?
输入输出样例
输入样例 #1
2
1
1
输出样例 #1
YES
3
3
输入样例 #2
3
1
1
1
输出样例 #2
NO
输入样例 #3
4
1
2
2
3
输出样例 #3
YES