Robot Pengumpul Permen

import java.util.Scanner;

public class Robot_pengumpul_permen {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[][] arr = new int[n+1][n+1];
        for (int i = 0; i < arr.length-1; i++) {
            for (int j = 1; j < arr.length; j++) {
                arr[i][j] = sc.nextInt();
            }
        }
        System.out.println(check(0, n, arr));
    }

    public static int check(int n, int m, int[][] arr) {
        if (n == arr.length-1 || m == 0) {
            return 0;
        }
        else {
            return arr[n][m] + Math.max(check(n+1, m, arr), check(n, m-1, arr));
        }
    }
}