Running in idea is successful, why not here?在idea里运行是成功的，为什么在这边就不行？

package zh.codegym.task.task07.task0712;

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

public class Solution {
    public static void main(String[] args) throws Exception {
        //在此编写你的代码
        ArrayList<String> list = new ArrayList<String>();
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        for(int i =0;i<10;i++){
            String a = reader.readLine();
            list.add(a);
        }
        int maxindex=0;
        int minindex=0;
        int min=list.get(0).length();
        String mins = list.get(0);
        int max=list.get(0).length();
        String maxs = list.get(0);
        for(int j=1;j<list.size();j++){
            int k =list.get(j).length();
            if(k>max){
                max = k;
                maxs= list.get(j);
                maxindex = j;
            }

            if(k<min){
                min = k;
                mins=list.get(j);
                minindex = j;
            }

        }
        if(maxindex<minindex){
            System.out.println(maxs);
        }else {
            System.out.println(mins);
        }


    }
}