@[hank0402](/user/482642) [推荐题解(](https://www.luogu.com.cn/blog/LKJOIUPOIU/p1284-san-jiao-xing-mu-chang-ti-xie)tujiantijie
by _Empty @ 2021-04-24 21:57:31
@[hank0402](/space/show?uid=482642)
a,b,c要double
by Fat_Fish @ 2021-04-24 23:13:39
```
double helen(int a,int b,int c){
double p=(a+b+c)/2;
```
@[Fat_Fish](/user/238885) 说的很对，abc都是整数了，p就是整除的结果了
by cookiebus @ 2021-04-25 11:04:09
对要用double类型因为有可能是小数，样例一就是例子
by Eden2026 @ 2023-07-16 11:07:36