1242-Interference Signal

内存限制:64MB  时间限制:2000ms  Special Judge: No accepted:2  submit:5

题目描述:

Dr.Kong’s laboratory monitor some interference signals. The interference signals can be digitized into a series of positive integer. May be, there are N integers a1,a2,…,an.

 

Dr.Kong wants to know the average strength of a contiguous interference signal block. the block must contain at least M integers.

 

Please help Dr.Kong to calculate the maximum average strength, given the constraint.

输入描述:

The input contains K test cases. Each test case specifies: * Line 1: Two space-separated integers, N and M. * Lines2~line N+1: ai (i=1,2,…,N) 1 ≤ K≤ 8, 5 ≤ N≤ 2000, 1 ≤ M ≤ N, 0 ≤ ai ≤9999

输出描述:

For each test case generate a single line containing a single integer that is 1000 times the maximal average value. Do not perform rounding.

样例输入:

复制 2 10 66 42103859415 210385 9

样例输出:

65007333

提示:

没有提示哦

来源

这道题只要注意好长度最小是m，和生成的是整数。

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int q=sc.nextInt(); while(q-->0){ int n=sc.nextInt(); int m=sc.nextInt(); int[] a=new int[n]; for(int i=0;i<n;i++){ a[i]=sc.nextInt(); } double max=-1; for(int i=0;i+m<=n;i++){ for(int j=m;j<=n&&i+j<=n;j++){ double sum=0; for(int k=0;k<j;k++){ sum+=a[i+k]; } if(sum/j>max){ max=sum/j; } } } System.out.println((int)(max*1000)); } } }