leetcode简单题：罗马数字转整数
我的代码：
class Solution:

def romanToInt(self, s: str) -> int:

r=0

for i in range(len(s)):

if s[i]=="I":

if len(s[i:])>1:

if s[i+1]=="V" or s[i+1]=="X":

r-=1

else:

r+=1

else:

r+=1

elif s[i]=="V":

r+=5

elif s[i]=="X":

if len(s[i:])>1:

if s[i+1]=="L" or s[i+1]=="C":

r-=10

else:

r+=10

else:

r+=10

elif s[i]=="L":

r+=50

elif s[i]=="C":

if len(s[i:])>1:

if s[i+1]=="D" or s[i+1]=="M":

r-=100

else:

r+=100

else:

r+=100

elif s[i]=="D":

r+=500

elif s[i]=="M":

r+=1000

return r
官方题解：见图片

【出摊】道在廷perfume发疯歌词文案️

1⃣️Perfume
搜no喂嗨～喃～❤️‍❤️‍❤️‍欧揩喂嗨～喃～留下我的香气️让你对我念念不忘掐嘞送表嘎叽帕谷嘟啰喃～～～

❤️‍BabyI'm comfortable with youYou know that I'm㊙️㊙️And you are comfortable with me❤️‍❤️‍❤️‍I know that you are

Yeah yeah that's me西疼弄咚喂酱西尼哄米哎连呼吸都香甜不已当他人看到你便会想起我滴下一滴㊙️㊙️㊙️Drip Drop

2⃣️Kiss
You're bad你闯进我的心在我的脑海里驻足良久将我的心扰乱❤️‍❤️❤️‍留下了专属于你的深刻印记渐渐地 I'm fallin' fallin' fallin' for you

Feel so good布嘟肉恩～mood babe㊙️U R L I P S your lipsKiss一搜恩莫哩throw it allI wanna Kiss your lips～

Make you wanna Kiss配合你slow downGreen light yeah～you givin' me the go go❤️‍❤️‍❤️‍就像现在这样Baby hold me tighter tighter no更热情的拥抱我吧！

3⃣️Dive
让我无法动弹️渐渐让我浸湿你一滴滴地滴落而下向着我蔓延而来️在我枯竭的心里化作甘霖落下～

正如那束手无策的波涛更加猛烈地涌来让我全身湿透一点一滴不知不觉间充满Dive我毫不犹豫向着你沉沦Dive对一直梦寐以求的你沉沦

4⃣️后遗症
yeah it's trueCan We Go Back❤️‍❤️‍❤️‍Can We Go Back yeahOoh～ooh～ooh～Can We Go Back❤️‍❤️‍❤️‍Ooh～ooh～ooh～～

5⃣️Strawberry sunday
安给！马嫩！Strawberry！Sunday！girl☀️万表卡！❤️❤️❤️Strawberry！Sunday！girl☀️☀️充满阳光的Monday！and Tuesday！‼️‼️这愈演愈烈的紧张感无比甜蜜地呼唤我们～～

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