京东第二题，本地都没问题，为什么赛码网上就不行呢？

京东第二题，本地都没问题，为什么赛码网上就不行呢？哪位大哥帮我看看

public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
long num = sc.nextLong();
int num1 = (int) (3*num);
long[] arr = new long[num1];
for(int i=0;i<num;i=i++){
Scanner sc1 = new Scanner(System.in);
String str = sc1.nextLine();
String[] line = str.split(" ");
arr[3*i] = Long.parseLong(line[0]);
arr[3*i+1] = Long.parseLong(line[1]);
arr[3*i+2] = Long.parseLong(line[2]);

}

int count = 0;
for(int i =0;i<arr.length;i=i+3){
for(int j=0;j<arr.length;j=j+3){
if(arr[i]<arr[ j] && arr[i+1] < arr[j+1] && arr[i+2] < arr[j+2]){
System.out.println(arr[i] + " " + arr[i+1] + " " + arr[i+2]);
count++;
break;
}
}
}

System.out.println(count);
}

}