#include <iostream>

using namespace std;

int main()
{
    int a, b, c;
    cin >> a >> b >> c;
    int arr[6];
    arr[0] = a + b + c;
    arr[1] = a*b*c;
    arr[2] = a+b*c;
    arr[3] = a*b+c;
    arr[4] = (a + b)*c;
    arr[5] = a*(b + c);
    int max = arr[0];
    for (int i = 1; i < 6; i++)
    {
        if (arr[i] > max)
        {
            max = arr[i];
        }
    }
    cout << max;
    return 0;
}