```python
import math
class NumPen:
def __init__(self):
self.pennum = None
self.penprice=None
ans=999999
num = int(input())
NumPens = [None]*3
for i in range(1,4):
np=NumPen()
np.pennum,np.penprice = map(int,input().split())
NumPens.append(np.pennum)
NumPens.append(np.penprice)
NumPens[i] = np
x=0
y=0
for i in range(1,4):
x =math.ceil(num/NumPens[i].pennum)
y = x*NumPens[i].penprice
if y<ans:
ans=y
print(ans)
```
by 羽濡 @ 2018-05-07 00:40:02
为什么你的代码这么长？
```
ans=x=0
for i in range(int(input())):
s=input().split()
x+=int(s[0])+int(s[1])-8
ans+=x
print(ans)
```
python的精髓就在于短小精悍~
by PY_Fighter @ 2018-09-06 09:36:43
还有不是只有5个点吗？
by PY_Fighter @ 2018-09-06 09:37:22
```
n = int(input())
l = []
yest_day_unhappy = 0
today_unhappy = 0
ans = []
for i in range(n):
l.append(list(map(int,input().split())))
for i in range(n):
today_unhappy = yest_day_unhappy + l[i][0]+l[i][1] - 8
ans.append(today_unhappy)
yest_day_unhappy = today_unhappy
today_unhappy = 0
print(sum(ans))
by chidor @ 2022-07-30 21:28:44