using namespace std;
int main(){
	int a,b,c;
    cout <<"Not triangle"<<endl;
    if(a*a+b*b==c*c) cout <<"Right triangle"<<endl;
	if(a*a+b*b>c*c) cout <<"Acute triangle"<<endl;
	if(a*a+b*b<c*c) cout <<"Obtuse triangle"<<endl;
	if(a==b||a==c||b==c) cout <<"Isosceles triangle"<<endl;
	if(a==b&&a==c&&b==c) cout <<"Equilateral triangle"<<endl;	
	else cout <<"Not triangle"<<endl;
}