九度Online Judge

OJ新增积分机制,如有任何问题或者建议,请发帖到九度论坛OJ意见反馈版,祝大家一切顺利!
亲,九度OJ官方微博开通了,欢迎你来粉!微博地址:weibo.com/jobdu

 题目1002-九度Online Judge,用代码记录你的成长之路!

题目1002:Grading

时间限制:1 秒

内存限制:32 兆

特殊判题:

提交:24951

解决:6344

题目描述:

    Grading hundreds of thousands of Graduate Entrance Exams is a hard work. It is even harder to design a process to make the results as fair as possible. One way is to assign each exam problem to 3 independent experts. If they do not agree to each other, a judge is invited to make the final decision. Now you are asked to write a program to help this process.
    For each problem, there is a full-mark P and a tolerance T(<P) given. The grading rules are:
    • A problem will first be assigned to 2 experts, to obtain G1 and G2. If the difference is within the tolerance, that is, if |G1 - G2| ≤ T, this problem's grade will be the average of G1 and G2.
    • If the difference exceeds T, the 3rd expert will give G3.
    • If G3 is within the tolerance with either G1 or G2, but NOT both, then this problem's grade will be the average of G3 and the closest grade.
    • If G3 is within the tolerance with both G1 and G2, then this problem's grade will be the maximum of the three grades.
    • If G3 is within the tolerance with neither G1 nor G2, a judge will give the final grade GJ.

输入:

    Each input file may contain more than one test case.
    Each case occupies a line containing six positive integers: P, T, G1, G2, G3, and GJ, as described in the problem. It is guaranteed that all the grades are valid, that is, in the interval [0, P].

输出:

    For each test case you should output the final grade of the problem in a line. The answer must be accurate to 1 decimal place.

样例输入:
20 2 15 13 10 18
样例输出:
14.0
来源:
2011年浙江大学计算机及软件工程研究生机试真题
答疑:
解题遇到问题?分享解题心得?讨论本题请访问:http://t.jobdu.com/thread-7726-1-1.html