题解 | #马戏团#

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class Main {
    public static void main(String[] args) throws IOException {
        SH1();
    }
    static class Persion{
        public int id;
        public int weight;
        public int height;

    }
    public static void SH1() throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String ln;
        while ((ln = br.readLine()) != null){
            List<Persion> personList = new ArrayList<>();
            int n = Integer.parseInt(ln);
            int[] p = new int[n];
            for (int i = 0; i < n; i++) {
                String[] str = br.readLine().split(" ");
                int id = Integer.parseInt(str[0]);
                int weight = Integer.parseInt(str[1]);
                int heigth = Integer.parseInt(str[2]);
                Persion persion = new Persion();
                persion.id = id;
                persion.weight = weight;
                persion.height = heigth;
                personList.add(persion);
            }
            personList.sort((a,b)->{
                if (a.weight - b.weight == 0){
                    return b.height - a.height;
                }
                return a.weight - b.weight;
            });
            int size = personList.size();
            for (int i = 1; i < size; i++) {
                for (int j = i - 1 ; j >= 0; j--) {
                    if (personList.get(j).height <= personList.get(i).height){
                        if (p[i] < p[j] + 1){
                            p[i] = p[j] + 1;
                        }
                    }
                }
            }
            int max = 0;
            for (int i = 0; i < n; i++) {
                if (p[i] > max) {
                    max = p[i];
                }
            }
            System.out.println(max+1);
        }

}
}