#include <bits/stdc++.h> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; if(a+c<b){ cout<<"No"<<endl; }else if(a+b<c){ cout<<"No"<<endl; }else if(b+c<a){ cout<<"No"<<endl; } if(a==b&&b==c){ cout<<"Equilateral Triangle"<<endl; }else if(a==b||a==c||b==c){ cout<<"Isosceles Triangle"<<endl; }else if(a*a+b*b==c*c||a*a+c*c==b*b||b*b+c*c==a*a){ cout<<"Right Triangle"<<endl; } }