#include <iostream>
using namespace std;
 
string sprawdz(int arr[]) {
	int a = 0; 
	int sum = 0;
 
	for(int i = 0; i < 4; i++) {
	  int x = arr[i];	
	  a ^= x;
	  sum += x;
	}
 
	if (a == 0) {
		if (sum == arr[0]*4) {
			return "Kwadrat";
		} else if (arr[0] == arr[2]) {
			return "Prostokąt";
		} 
	}	
 
	return "Nie-wiadomo-co";
}
 
int main() {
	int arr[4] = {2, 6, 6, 2};
    cout << endl << sprawdz(arr);
    int arra[4] = {2, 6, 2, 6};
    cout << endl << sprawdz(arra);
    int arrb[4] = {2, 2, 2, 2};
    cout << endl << sprawdz(arrb);
    int arrc[4] = {2, 2, 2, 6};
    cout << endl << sprawdz(arrc);
    cout << endl;
	return 0;
}

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