83分 WA...WA...

#include<bits/stdc++.h>
using namespace std;
int main(){
	int ab,bb,cb;
	cin>>ab>>bb>>cb;
	if(ab>cb)swap(ab,cb);
	if(bb>cb)swap(bb,cb);
	if(ab>cb)swap(ab,cb);
	if(bb>cb)swap(bb,cb);
	if(ab+bb<=cb){
	    cout<<"Not triangle";
	return 0;
	}
	if(ab==bb==cb) cout<<"Right triangle"<<endl;
	if(ab*ab+bb*bb>cb*cb) cout<<"Acute triangle"<<endl;
	if(ab*ab+bb*bb<cb*cb) cout<<"Obtuse triangle"<<endl;
	if(ab==bb||ab==cb||bb==cb)cout<<"Isosceles triangle"<<endl;
	if(ab==bb&&bb==cb)cout<<"Equilateral triangle"<<endl;
	
	return 0;
}