HDU1069 最长上升子序列

Posted 2020-11-07 冰冻三尺 非一日之寒

emm。。。。矩形嵌套 还记得吗。。。。就是它。。。

直接贴代码了。。。。

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;

public class Main{
    final static int maxn = 1000000;
    final static int INF = 0xfffffff;
    public static class node{
        int x,y,h;
        node(int x,int y,int h)
        {
            this.x = x;
            this.y = y;
            this.h = h;
        }
    } 
    public static void main(String[] args)  {
        Scanner cin = new Scanner(System.in);
        int cnt = 0;
        while(cin.hasNext())
        {
            ArrayList<node> Node = new ArrayList<>();
            int[] list = new int[maxn];
            int n = cin.nextInt();
            if(n == 0)
                break;
            for(int i=0;i<n;i++)
            {
                list[0] = cin.nextInt();
                list[1] = cin.nextInt();
                list[2] = cin.nextInt();
                Arrays.sort(list,0,3);
                Node.add(new node(list[0],list[1],list[2]));
                Node.add(new node(list[0],list[2],list[1]));
                Node.add(new node(list[1],list[2],list[0]));
            }
            Collections.sort(Node,new Comparator<node>() {
                public int compare(node a,node b)
                {
                    return a.x -b.x;
                }

            });
            int maxx = -INF;
            int[] dp = new int[maxn];
            for(int i=0;i<Node.size();i++)
            {
                dp[i] = Node.get(i).h;
                for(int j=0;j<i;j++)
                {
                    if(Node.get(i).x > Node.get(j).x && Node.get(i).y > Node.get(j).y && dp[j]+Node.get(i).h > dp[i])
                        dp[i] = dp[j] + Node.get(i).h;
                }
                maxx = Math.max(maxx, dp[i]);
            }
            System.out.println("Case " + ++cnt + ": maximum height = " + maxx);
            
        }
        
    }
}