编写一个程序，求s=1+(1+2)+(1+2+3)+...+(1+2+3+...+n)的值Cyuyan

以下是Java语言实现求s=1+(1+2)+(1+2+3)+...+(1+2+3+...+n)的程序：

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
        int n = reader.nextInt();
        int i, s = 0, t = 0;
        for (i = 1; i <= n; i++) {
            t = t + i;
            s = s + t;
        }
        System.out.println(s);
    }
}