#include <iostream>
using namespace std;
int main() {
// your code goes here
int a,b,c,d;
cin >> a; cin >> b; cin >> c;
d = a + (b * c);
d = a * (b+c) > d ? a * (b+c) : d;
d = a * b * c > d ? a*b*c : d;
d = (a + b) * c > d ? (a + b) * c : d;
d = a + b + c > d ? a+b+c : d;
cout << d << endl;
return 0;
}
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