@[expect](/space/show?uid=28910)
```
while(f<r&&Slope(q[f],q[f+1])<=2.0*s[i]*a*(s[q[f]]-s[q[f+1]])) f++;
(s[q[f]]-s[q[f+1]])删了试一试
```
by 红色OI再临 @ 2019-08-15 20:26:17
好像不是小于与小于等于号的问题
by 红色OI再临 @ 2019-08-15 20:26:42