#include <iostream>

using namespace std;

int main()

{

double a[] = { 1.2, 1.7, 3.5, 1.6, 4.9, 2.1 };

double b[] = { 9.2, 7.8, 8.3, 3.5, 5.7, 7.3 };

 const int xLength = 6;

double x[xLength];

for (int i = 0; i < xLength; i++) {

 x[i] = (a[i] + b[i]) / 3 - 1 / 4 * sqrt(a[i] * b[i]);

 cout << x[i] << " ";

}

cout << endl;

return 0;

}