//We need to sort out 3 in the second power of the options for the arrangement of signs

#include <iostream>

using namespace std;

int main()
{
    int a, b, c, min;
    cin >> a >> b >> c;
    min = a + b + c;
    if(a + b - c < min) min = a + b - c;
    if(a - b + c < min) min = a - b + c;
    if(a - b - c < min) min = a - b - c;
    if(a - b + c < min) min = a - b + c;
    if(a - b * c < min) min = a - b * c;
    if(a * b * c < min) min = a * b * c;
    if(a * b + c < min) min = a * b + c;
    if(a * b - c < min) min = a * b - c;
    cout << min;
    return 0;
}