数列求和

n = int(input())
print(sum([i for i in range(1,n + 1)]))

质数口袋

n = int(input())
i = 2
sum = 0
count = 0
while n - i >= sum:flag = Truefor j in range(2,i): # 判断i是否为素数if i % j == 0:flag = Falsebreakif flag:sum += iprint(i)count += 1i += 1
print(count)

奇怪数求和

n = int(input())
res = []
for i in range(1,n + 1):if '2' in str(i) or '0' in str(i) or '3' in str(i) or '8' in str(i):res.append(i)
print(sum(res))