HDU 5536: Chip Factory

import static java.lang.Math.*;import java.util.*;

/** * @author Sycamore * @link http://acm.hdu.edu.cn/showproblem.php?pid=5536 * @date Sep, 16 */

public class Main {

public static void main(String args[]) {        Scanner scanner =new Scanner(System.in);        int T=scanner.nextInt();        while(T--!=0){            int n=scanner.nextInt(),ans=0;            int []s=new int[n];            for(int i=0;i<n;i++){                s[i]=scanner.nextInt();            }            for(int i=0;i<n;i++){                for(int j=i+1;j<n;j++){                    for(int k=j+1;k<n;k++){                        ans=max(ans,(s[i]+s[j])^s[k]);                        ans=max(ans,(s[i]+s[k])^s[j]);                        ans=max(ans,(s[j]+s[k])^s[i]);                    }                }            }            System.out.println(ans);        }

}}

pasting