- 题目描述:
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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:
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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:
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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:
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20 2 15 13 10 18
- 样例输出:
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14.0
Java Codeimport java.util.Scanner; public class Main{ public static void main(String[] args) { Scanner in = new Scanner(System.in); while(in.hasNextInt()){ int P = in.nextInt(); int T = in.nextInt(); int G1 = in.nextInt(); int G2 = in.nextInt(); int G3 = in.nextInt(); int GJ = in.nextInt(); float grade = 0 ; int a = Math.abs(G1 - G2); int b = Math.abs(G1 - G3); int c = Math.abs(G2 - G3); if(a <= T) grade = (float)(G1 + G2)/2; else{ if((b <= T) && (c <= T)){ int temp = G1 > G2 ? G1 : G2; grade = temp > G3 ? temp :G3; } if((b > T) && (c > T)) grade = GJ; if(b <= T) grade = (float)(G1 + G3)/2; if(c <= T) grade = (float)(G2 + G3)/2; } System.out.println(grade); } } }