#include <iostream>
#include <iomanip>
#include <math.h>
#include <cmath>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

using namespace std;

int main(int argc, char** argv) {
 
 long double n,a,b,c;
 while( cin>>a>>b>>c)
 {
 	if(a>b) swap(a,b);
 	if(b>c) swap(b,c);
 	if(a>b) swap(a,b);
 	cout<<a<<" "<<b<<" "<<c<<endl;
 	if(a+b>c&&b+c>a&&a+c>b){

  if(a*a==b*b+c*c||b*b==a*a+c*c||c*c==a*a+b*b)
  {
  
   cout << "Right" <<endl;
  }
  else if(a*a<b*b+c*c&&b*b<a*a+c*c&&c*c<a*a+b*b)
  {
   cout << "Acute" <<endl;

  }
  else
  {
   cout << "Obtuse"<<endl;

  }
  	 }
  	 else
  	 cout<<"No"<<endl;
  	 
 }
 return 0;
}

為甚麼要用   long double  呢???

好用ㄚ