#include <iostream>
#include <math.h>

using namespace std;

int main()
{
    setlocale(LC_ALL, "Russian");
    double x, y, f, a, s;
    int k;
    cout << "Введите х: ";
    cin >> x;
    cout << "Введите y: ";
    cin >> y;
    cout << "Выберите 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, 2);
        break;
    case 3: f = exp(x);
        break;
    default: cout << "Не выбрана функция";
        return 1;
    }
    a = x - y;
    if (a == 0)
        s = pow(f, 2) + pow(f, 1/3.0) + sin(y);
    else
        if (a > 0)
            s = pow(f - y, 2) + log(x);
        else
            s = pow(y - f, 2) + tan(y);
    cout << "Результат = " << s;
}