P5717 【深基3.习8】三角形分类---Java 这评分为什么会很低

import java.util.Arrays;
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc =new Scanner(System.in);
	      int arr[]= new int[3];
	      for (int i = 0; i < arr.length; i++) {
			arr[i]=sc.nextInt();
			}
	      Arrays.sort(arr);
	     
	      	int a= arr[0]*arr[0]+arr[1]*arr[1];
	    	int b= arr[2]*arr[2];
			if(arr[0]+arr[1]<=arr[2]){
				System.out.println("Not triangle");
			}
			if(a==b) {
				System.out.println("Right triangle");
			}
			if(a>b) {
				System.out.println("Acute triangle");
			}
			if(a