参考答案：

#include<iostream>

using namespace std;

int main()
{
    int a, b, c;
    scanf("%d\n%d\n%d", &a, &b, &c);

    int sum1, sum2, sum3, sum4, sum5, sum6;
    sum1 = a * b * c;
    sum2 = (a + b) * c;
    sum3 = a * (b + c);
    sum4 = a + b + c;
    sum5 = a * b + c;
    sum6 = a + b * c;
    int d[6] = { sum1,sum2,sum3,sum4,sum5,sum6 };

    for (int i = 0; i < 5; i++)
    {
        if (d[i] > d[i + 1])
        {
            swap(d[i], d[i + 1]);
        }
    }
    printf("%d", d[5]);
}