Practical_3_1.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;



public class Practical_3_1 {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        List<List<Integer>> arr = new ArrayList<>();

        for (int i = 0; i < 6; i++) {
            String[] arrRowTempItems = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

            List<Integer> arrRowItems = new ArrayList<>();

            for (int j = 0; j < 6; j++) {
                int arrItem = Integer.parseInt(arrRowTempItems[j]);
                arrRowItems.add(arrItem);
            }

            arr.add(arrRowItems);
        }
        int maxSum = Integer.MIN_VALUE;
        
        for(int i=0;i<6;i++){
            for(int j=0;j<6;j++){
                if(i > 1 && j > 1){
                    int sum = arr.get(i).get(j) + arr.get(i).get(j-1) + 
                    arr.get(i).get(j-2) + arr.get(i-1).get(j-1) +
                    arr.get(i-2).get(j) + arr.get(i-2).get(j-1)+ arr.get(i-2).get(j-2);
                    
                    if(sum > maxSum){
                        maxSum = sum;
                    }
                    
                }
            }
        }
        System.out.println(maxSum);
        bufferedReader.close();
    }
}