#include <iostream>
using namespace std;

int main() {
	cout << "x="; cin >> x;
	cout << "y="; cin >> y;
	cout << "z="; cin >> z;
	t = pow(3, -x + 1) * sin(x);
	u = log(y + pow(z, 2)) + pow(sin(z / y), 2);
	cout << "t=" << t << endl; cout << "u=" << u << endl;

	system("pause");
	return 0;
}