static int[][] del(int[][]a, int i, int j)
	{
		int[][] n = new int[a.length-1][a.length-1];

		int k = 0;
		int l = 0;
		for(int f = 0; f<n.length; f++)
		{
			for(int g = 0; g<n.length; g++)
			{
				if(k != i && l != j)
				{
					n[f][g] = a[k][l];
				}
			k++;
			l++;
			}
		}
		return n;
	}