参考：
```cpp
#include <iostream>
#include <cmath>
using namespace std;
int main(){
int a,b,c,d,e;
cin>>a>>b>>c;
if (a+b<=c or b+c<=a or a+c<=b){
cout<<"Not triangle";
return 0;
}
d=min(a,min(b,c));
e=max(a,(b,c));
if (a!=d and a!=e)e=a;
else if (b!=d and b!=e)e=b;
else if (c!=d and c!=e)e=c;
if (pow(d,2)+pow(e,2)==pow(max(a,max(b,c)),2))cout<<"Right triangle\n";
if (pow(d,2)+pow(e,2)>pow(max(a,max(b,c)),2))cout<<"Acute triangle\n";
if (pow(d,2)+pow(e,2)<pow(max(a,max(b,c)),2))cout<<"Obtuse triangle\n";
if (a==b or b==c or a==c)cout<<"Isosceles triangle\n";
if (a==b and b==c and a==c)cout<<"Equilateral triangle";
}
```
@[xingjielong](/user/1143897)
**请问你是否判断为：**
# 短边
by penguin_is_cool @ 2023-12-24 14:44:04
谢谢
by xingjielong @ 2023-12-24 15:14:03