#include <iostream>

using namespace std;

int main ()
{
    int a, b, c;
    cin >> a >> b >> c;
    if(a < b + c && b < a + c && c < a + b)
    {
        cout << "Taki trojkat istnieje\n";
        if((a * a == b * b + c * c) || (b * b == a * a + c * c) || (c * c == a * a + b * b))
            cout << "Trojkat jest prostokatny.\n";
    }
    else
    {
        cout << "taki trojkat nie istnieje";
    }
    return 0;
}