#include
#include
using namespace std;
float sinx(int a, int b, int c);
int main()
{
int a,b,c;
float x;
cin >> a >> b >> c;
x = 2 * (sinx(a, b, c)) + 3 * (sinx(a, b, c));
cout << x;</span>
system("pause");
}
float sinx(int a, int b, int c)
{
return sin(a)*sin(b)*sin(c);
}