#include <iostream>
#include <vector>

using namespace std;

int main()
{
    cout << "Enter A and B: ";
    float a, b;
    float max;
    cin >> a >> b;
    cout << "A + B = " << a + b << '\n'
     << "A - B = " << a - b << '\n'
     << "A * B = " << a * b << '\n'
     << "A / B = " << a / b << '\n';
     vector<float> c {a+b, a-b, a*b, a/b};
     max = a+b;
     for (const int& i : c) {
        if (i > max) {
            max = i;
        }
     }
     cout << max;
}