#include <iostream>
using namespace std;

int main()
{
	bool x = true, y = true, z = false, result;

	result = (y || z) || !x;
	cout << "result = " << result << endl;
	result = z || x || y;
	cout << "result = " << result << endl;
	result = y || (z && !x);
	cout << "result = " << result << endl;
	result = z || (x && !(y || z));
	cout << "result = " << result << endl;
	result = x || !x && z;
	cout << "result = " << result << endl;
}