#include using namespace std; int main(void) { int a,b,c,t1,t2; cin>>a>>b>>c; if(a>b) swap(a,b);//swap 交换 if(b>c) swap(b,c); if(a>b) swap(a,b); t1=aa+bb;
t2=c*c; if(a+b<=c) cout<<"Not triangle"<<endl; else { if(t1t2) cout<<"Right triangle"<<endl; if(t1>t2) cout<<"Acute triangle"<<endl; if(t1<t2) cout<<"Obtuse triangle"<<endl; if(ab||bc) cout<<"Isosceles triangle"<<endl; if(ab&&b==c) cout<<"Equilateral triangle"<<endl; } return 0; }