您的程式被監控系統中斷，可能是程式無法正常結束所導致。
Error: Could not find or load main class base_java
Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.util.Scanner.nextLine(Scanner.java:1540)
	at JAVA.main(JAVA.java:9)


import java.util.Scanner;
public class JAVA{
	public static void main(String[] args){
		Scanner cin= new Scanner(System.in);
		
		while (cin.hasNext()){
		Scanner r =new Scanner(System.in);
	    int n = cin.nextInt();
		String[] grade1 = r.nextLine().split(" ");
		int[] grade = new int[n];
	
		for(int i=0;i < n;i++){
			 grade[i] = Integer.parseInt(grade1[i]);
			
		}
		
		int small,na = 0,nu = 0;
		
		for(int i=0;i<n;i++){
		   
			for(int j=0;j < n - 1;j++){
				if(grade[j] > grade[j+1]){
					small=grade[j+1];
					grade[j+1] = grade[j];
					grade[j] =  small;
				}
			
			}
		}
		int hei = grade[n-1];
		int low = grade[0];
		for(int i=0;i < n;i++){
			if(grade[i] >= 60){
				if(grade[i] < hei){
					hei = grade[i];
					
				}
				nu++;
				
			}else{
				if(grade[i] > low){
					low = grade[i];
				}
				na++;
			}
			
		}
	
		for(int i=0;i < n;i++){
			System.out.print(grade[i]+" ");
			
			
		}
		System.out.println("");
		if(na ==0){
			System.out.println("best case");
		}else System.out.println(low);
		
		if(nu == 0){
			System.out.println("worst case");
		}else System.out.println(hei);
	}
	}
}