http://poj.org/problem?id=2833 //* @author: 82638882@163.com import java.io.*; import java.util.*; public class Main { public static void main(String[] args) { InputStreamReader is=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(is); StringBuffer buf=new StringBuffer(); try { while(true) { char c; int[] u=new int[3]; for(int i=0;i< 3;i++) { while(true) { c=(char)in.read(); if(c==32||c==13) break; buf.append(c); } u[i]=Integer.parseInt(buf.toString()); buf.delete(0,buf.length()); } if(u[0]==0&&u[1]==0&&u[2]==0)break; int[] max=new int[u[0]]; int[] min=new int[u[1]]; for(int i=0;i< u[1];i++) min[i]=9999999; double total=0; in.read(); for(int i=0;i< u[2];i++) { while(true) { c=(char)in.read(); if(c==32||c==13) break; buf.append(c); } int w=Integer.parseInt(buf.toString()); buf.delete(0,buf.length()); if(max[0]< w)max[0]=w; if(min[u[1]-1]>w)min[u[1]-1]=w; Arrays.sort(max); Arrays.sort(min); total+=w; } for(Integer e:max) total-=e; for(Integer e:min) total-=e; in.read(); System.out.printf("%.6fn",total/(u[2]-u[1]-u[0])); } } catch (IOException e) {} } }
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