#include <iostream.h>
#include <math.h>
 int main()
 {
 double x, y, f, a, s;
 int k;
 cout << "Vvedite x ";
 cin >> x;
 cout << "Vvedite y ";
 cin >> y;
 cout << "Viberite f: 1 - sh(x), 2 - x^2, 3 – exp(x) ";
 cin >> k;
 switch (k)
 { case 1: f = sinh(x);
 break; case 2: f = pow(x, 1/3.);
 break; case 3: f = exp(x);
 break;
 default: cout << "Ne vuibrana funkciya ";
	 return 1;
 }
 a = (x * y);
 if (a <= 10 && a > 0.5) s = exp(f - fabs(y));
 else if (a <= 0.5 && a > 0.1) s = pow(fabs(f+y),1/3.);
 else s = 2*pow(f,2);
 cout << "RESULT = " << s << endl;
 return 0;
 }