Codeforces Maximum in Table

import java.util.Scanner;public class MaximumInTable {public static void main(String[] args) {Scanner scanner = new Scanner(System.in);int n = scanner.nextInt();int[][] a = new int[n][n];for(int i = 0; i < n; i++) {a[0][i] = 1;a[i][0] = 1;}for(int i = 1; i < n; i++) {for(int j = 1; j < n; j++) {a[i][j] = a[i-1][j] + a[i][j-1];}}System.out.println(a[n-1][n-1]);}}