题解 | 田忌赛马

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int[] king = new int[3];
        for(int i = 0; i < 3; i++){
            king[i] = in.nextInt();
        }
        int[] tian = new int[3];
        for(int i = 0; i < 3; i++){
            tian[i] = in.nextInt();
        }
        List<int[]> permutations = new ArrayList<>();
        permute(tian,0,permutations);
        for(int[] order : permutations){
            int wins = 0;
            for(int i = 0; i < 3; i++){
                if(order[i] > king[i]){
                    wins++;
                }
            }
            if(wins >= 2){
                System.out.println("Yes");
                in.close();
                return;
            }
        }
        System.out.println("No");
        in.close();
    }

    public static void permute(int[] arr,int start,List<int[]> result){
        if(start == arr.length){
            result.add(arr.clone());
            return;
        }
        for(int i = start;i<arr.length;i++){
            swap(arr,start,i);
            permute(arr,start + 1,result);
            swap(arr,start,i);
        }
    }

    public static void swap(int[] arr,int i,int j){
        int temp = arr[i];
        arr[i] = arr[j];
        arr[j] = temp;
    }
}