Grading

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题目描述
Time Limit: 1000 ms
Memory Limit: 256 mb

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输入输出格式
输入描述:
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].
输出描述:
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.
输入输出样例
输入样例#:
20 2 15 13 10 18
输出样例#:
复制
14.0
题目来源
浙江大学机试题
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