為什麼re啊，本機測試都沒問題

平凡的夜空 @ 2020-06-24 20:41:43

import math as m
s=input().split()
for i in range(len(s)):
    s[i]=float(s[i])
#s[0] s[1] s[2] s[3] s[4] s[5]
x1=s[0]
x2=s[2]
x3=s[4]
y1=s[1]
y2=s[3]
y3=s[5]
def dis(x1,y1,x2,y2):
    return m.sqrt((x2-x1)**2+(y2-y1)**2)
print('%.2f' % (dis(x1,y1,x2,y2)+dis(x2,y2,x3,y3)+dis(x1,y1,x3,y3)))

by 平凡的夜空 @ 2020-06-24 20:53:05

@一只爬行者 谢谢您，刚和台湾朋友聊天忘记改回来了，谢谢你们！真的感谢

by impuk @ 2020-06-24 20:53:30

原来会简体字啊……

/kk/kk

by WanderingTrader @ 2020-06-24 21:13:15

繁体好评

by FZzzz @ 2020-06-24 21:14:25

草

by FZzzz @ 2020-06-24 21:14:38

@咬胖酒花

by k3v1n070828 @ 2020-06-24 21:32:57

@皎胖洒花

by k3v1n070828 @ 2020-06-24 21:33:13

.

by zhoukangyang @ 2020-06-24 21:56:23

@皎胖洒花