n = int(input("请输入一个正数 : "))
sum = 0
for i in range(n):
    sum += i
print("1~%d的求和结果为%d" % (n, sum))

l = []
for i in range(3):
    x = int(input('请输入整数: '))
    l.append(x)
l.sort()
print(l)

for i in range(1, 10):
    for j in range(1, i + 1):
        print("%d×%d=%-2d " % (j, i, i * j), end='')
    print('')

import turtle as t

def draw_fiveStars(len):
    count = 1
    while count <= 5:
        t.forward(len)
        t.right(144)
        count += 1
    len += 10
    if len <= 100:
        draw_fiveStars(len)

def main():
    t.penup()
    t.backward(100)
    t.pendown()
    t.pensize(2)
    t.pencolor('red')
    segment = 50
    draw_fiveStars(segment)
    t.exitonclick()

if __name__ == '__main__':
	main()

l = [1, 2]
n = int(input('斐波那契数列长度 : '))
while len(l) < n:
    l.append(l[len(l) - 1] + l[len(l) - 2])
print(l)

for i in range(2, 1001):
    k = []
    s = i
    count = 0
    sum = 0
    for j in range(1, i):
        if i % j == 0:
            k.append(j)
            count += 1
            sum += j
    if sum == i:
        print(i)

def age(n):
    if n == 1:
        c = 10
    else:
        c = age(n - 1) + 2
    return c


print(age(5))

ls = ['one', 'two', 'three']
for i in ls[::-1]:
    print(i)