#include <iostream>
using namespace std;
int main()
{
float a, b, c, aTablica[3];
bool bRO;
while(cin >> a >> b >> c)
{
if(b + c < a || a + b < c || a + c < b)
{
cout << "brak" << endl;
}
else
{
if(c*c == a*a + b*b || a*a == c*c + b*b || b*b == a*a + c*c)
{
cout << "prostokatny" << endl;
}
else
{
aTablica[0] = a*a - (b*b + c*c);
aTablica[1] = b*b - (a*a + c*c);
aTablica[2] = c*c - (a*a + b*b);
for(int i = 0; i < 3; i++)
{
if(aTablica[i] > 0)
{
bRO = true;
}
else
{
bRO = false;
}
}
if(bRO)
cout << "rozwartokatny" << endl;
else
cout << "ostrokatny" << endl;
}
}
}
return 0;
}
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