编写python程序以实现计算s=1+(1+2)+(1+2+3)+…+(1+2+3+…+n),n由用户输入

以下是两种编写Python程序实现计算s的方法：

方法一：使用while循环

n = int(input("请输入n的值:"))
s = 0
i = 1
while n >= i:
    j = 1
    temp = 0
    while j <= i:
        temp = temp + j
        j = j + 1
    s = s + temp
    i = i + 1
print(s)

方法二：使用嵌套循环

n = int(input("请输入n的值:"))
s = 0
for i in range(1, n+1):
    temp = 0
    for j in range(1, i+1):
        temp = temp + j
    s = s + temp
print(s)