hara

https://www.acmicpc.net/problem/2156 import java.util.Scanner; public class a2156 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int num = sc.nextInt(); int[] arr = new int[num+1]; for(int i=1; i= 2) { d[2] = arr[1] + arr[2]; } for(int i=3; i