编辑代码

import java.util.Scanner;
class Main {
	public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int a[] = new int[40];
        a[1] = 0;
        a[2] = 1;
        a[3] = 1;
        for(int i = 4; i <= n + 1; i++)
        {
            a[i] = a[i - 1] + a[i - 2] + a[i - 3];
            System.out.println(a[i]);
        }
        System.out.println(a[n + 1]);
        return;
	}
}