2dimarrays

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {

    static void Main(String[] args) {
        int[][] arr = new int[6][];
        for(int arr_i = 0; arr_i < 6; arr_i++){
           string[] arr_temp = Console.ReadLine().Split(' ');
           arr[arr_i] = Array.ConvertAll(arr_temp,Int32.Parse);
        }
        int tempsum = 0;
        int maxsum = -63;
        for(int i = 0; i < 4; i++) {
            for(int j = 0; j < 4; j++) {
                tempsum = arr[i][j] + arr[i][j+1] + arr[i][j+2] + arr[i+1][j+1] + arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2];
                if(tempsum > maxsum) {
                    maxsum = tempsum;
                }
            }
        }
        Console.WriteLine(maxsum);
    }
}