[SUMTIRIAN] wrong in path

import java.io.*;

class type {
    public static void main(String args[]) throws NumberFormatException,
            IOException {
        // BufferedReader in = new BufferedReader(InputStreamReader(System.in));
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        int t = Integer.parseInt(in.readLine());
        int[] sum;
        //sumleft = sumright = 0;
        while (t-- > 0) {
            int n = Integer.parseInt(in.readLine());
            for (int i = 0; i < n; i++) {
                String[] a = new String[n + 1];
                a = in.readLine().split(" ");
                int[] ar = new int[i + 1];
                for (int j = 0; j <= i; j++) {
                    ar[j] = Integer.parseInt(a[j]);
                    // System.out.print(ar[j]);
                }
                /*if (i == 0) {
                    sumleft = sumright = ar[0];
                } else {
                    sumleft += ar[0];
                    sumright += ar[i];
                }*/
                sum[i]
            }
            /*if (sumleft >= sumright)
                System.out.println(sumleft);
            else
                System.out.println(sumright);*/
        }
    }
}