#include <iostream>

using namespace std;

int main()
{
    setlocale(LC_ALL, "rus");
    const double e = 2.7182818281818181818;
    float x;
    float y;
    cout << "Введите X и Y: "; cin >> x >> y;
    if (y < pow(e, x) && y < pow(e, -x) && y > x * x)
    {
        cout << x + y;
    }
    else
    {
        cout << x - y;
    }
 }