#include <iostream>
#include <cmath>
using namespace std;
int main(){
int a, b, c;
while(cin>>a>>b>>c){
int a2=pow(a, 2);
int b2=pow(b, 2);
int c2=pow(c, 2);
if(a>b && a>c)
if(a>=(b+c))
cout<<"brak"<<endl;
else{
if((a2+b2)==c2)
cout<<"prostokatny"<<endl;
if((a2+b2)>c2)
cout<<"ostrokatny"<<endl;
if((a2+b2)<c2)
cout<<"rozwartokatny"<<endl;
}
if(b>a && b>c)
if(b>=(a+c))
cout<<"brak"<<endl;
else{
if((a2+b2)==c2)
cout<<"prostokatny"<<endl;
if((a2+b2)>c2)
cout<<"ostrokatny"<<endl;
if((a2+b2)<c2)
cout<<"rozwartokatny"<<endl;
}
if(c>a && c>b)
if(c>=(a+b))
cout<<"brak"<<endl;
else{
if((a2+b2)==c2)
cout<<"prostokatny"<<endl;
if((a2+b2)>c2)
cout<<"ostrokatny"<<endl;
if((a2+b2)<c2)
cout<<"rozwartokatny"<<endl;
}
if(a==b && a==c){
if((a2+b2)==c2)
cout<<"prostokatny"<<endl;
if((a2+b2)>c2)
cout<<"ostrokatny"<<endl;
if((a2+b2)<c2)
cout<<"rozwartokatny"<<endl;
}
}
}
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