CSP 201909-2 小明种苹果(续) Java 满分

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Boolean> arr = new ArrayList<>();     //存储树是否落果
        int N = sc.nextInt();
        int apples = 0, treeNum = 0, applesAll = 0, E = 0;
        boolean flag;
        for (int i = 0; i < N; i++) {
            flag = false;   //假设树不落果
            int m = sc.nextInt();
            int a = sc.nextInt();
            if (a > 0) {
                apples = a;     //树初始果数
                for (int j = 1; j < m; j++) {
                    int b = sc.nextInt();
                    if (b <= 0) {
                        apples = apples + b;//如果b小于等于0,则表示果数减掉疏果数
                    } else {
                        if (apples > b) {
                            flag = true;    //树落果
                            apples = apples - (apples - b);//果数减去落果数
                        }
                    }
                }
            }
            else
                break;
            if (flag) {
                arr.add(true);
                treeNum++;      //落果的树的数量加1
            }
            else
                arr.add(false);
            applesAll = apples + applesAll;
        }
        for(int i =0;i<arr.size();i++){
            //判断下标为i的树是否落果
            if(arr.get(i)){
                if(arr.get(i)&&arr.get((i+1)%arr.size())&&arr.get((i+2)%arr.size()))
                    E++;
            }
        }
        System.out.println(applesAll + " " + treeNum + " " + E);
    }
}

此题需要注意一个树有可能会有几次落果，所以在统计落果树的数量时可能会出现错误

标签：arr,Java,小明种,int,落果,nextInt,apples,sc,CSP
来源： https://blog.csdn.net/Mrwyx/article/details/110527282