https://codeforces.com/problemset/problem/479/A

#include<bits/stdc++.h>
using namespace std;
int ans=0;
int main(void)
{
	int a,b,c; cin>>a>>b>>c;
	ans=max(ans,a+b+c);
	ans=max(ans,a+b*c);
	ans=max(ans,a*(b+c));
	ans=max(ans,(a+b)*c);
	ans=max(ans,a*b*c);
	cout<<ans;
	return 0;
}