help for problem 'DOMSOL' https://www.codechef.com/problems/DOMSOL

can someone tell me why my code is getting ‘wrong answer’ for the problem ‘DOMSOL’

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc = new Scanner(System.in);
		int column = sc.nextInt();
    	int[][] matrix = new int[2][column];
    	for(int i = 0; i < 2; i++) {
    	    for(int j = 0; j < column; j++) {
                matrix[i][j] = sc.nextInt();
    	    }
    	}
    	// for(int i = 0; i < 2; i++) {
    	//     for(int j = 0; j < column; j++) {
        //         System.out.println(matrix[i][j]);
    	//     }
    	// }
    	int type = 1; // vertical
        long score = Math.abs(matrix[0][0] - matrix[1][0]);
        // System.out.println(score);
        for (int i = 1; i < column; i++) {
            if (type == 1) {
                if ((Math.abs(matrix[0][i-1] - matrix[1][i-1]) + Math.abs(matrix[0][i] - matrix[1][i])) >= (Math.abs(matrix[0][i] - matrix[0][i-1]) + Math.abs(matrix[1][i] - matrix[1][i-1]))) {
                    score += Math.abs(matrix[0][i] - matrix[1][i]);
                } else {
                    type = 2;
                    score += - Math.abs(matrix[0][i-1] - matrix[1][i-1])
                    + Math.abs(matrix[0][i] - matrix[0][i-1])
                    + Math.abs(matrix[1][i] - matrix[1][i-1]);
                }
            } else {
                int a = Math.abs(matrix[0][i] - matrix[1][i]) + Math.abs(matrix[0][i-1] - matrix[0][i-2]) + Math.abs(matrix[1][i-1] - matrix[1][i-2]);
                int b = Math.abs(matrix[0][i-2] - matrix[1][i-2]) + Math.abs(matrix[0][i] - matrix[0][i-1]) + Math.abs(matrix[1][i] - matrix[1][i-1]);
                if (a >= b) {
                    type = 1;
                    score += Math.abs(matrix[0][i] - matrix[1][i]);
                } else {
                    score -= Math.abs(matrix[0][i-1] - matrix[0][i-2]) + Math.abs(matrix[1][i-1] - matrix[1][i-2]);
                    score += b;
                }
            }
        }
        System.out.println(score);
	}
}
//