#include <iostream>
#include <math.h>
using namespace std;
int main()
{
setlocale(LC_ALL, "Russian");
double b, x, y;
cin >> x;
cin >> y;
b = pow((x + y) / (0.2 * x), 1./3)*sin(pow(tan(x),2));
cout << b;
return 0;
}
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
setlocale(LC_ALL, "Russian");
double b, x, y;
cin >> x;
cin >> y;
b = pow((x + y) / (0.2 * x), 1./3)*sin(pow(tan(x),2));
cout << b;
return 0;
}