B - Expression

Problem description

Petya studies in a school and he adores Maths. His class has been studying arithmetic expressions. On the last class the teacher wrote three positive integers a, b, c on the blackboard. The task was to insert signs of operations '+' and '*', and probably brackets between the numbers so that the value of the resulting expression is as large as possible. Let's consider an example: assume that the teacher wrote numbers 1, 2 and 3 on the blackboard. Here are some ways of placing signs and brackets:

• 1+2*3=7
• 1*(2+3)=5
• 1*2*3=6
• (1+2)*3=9

Note that you can insert operation signs only between a and b, and between b and c, that is, you cannot swap integers. For instance, in the given sample you cannot get expression (1+3)*2.

It's easy to see that the maximum value that you can obtain is 9.

Your task is: given a, b and c print the maximum value that you can get.

Input

The input contains three integers a, b and c, each on a single line (1 ≤ a, b, c ≤ 10).

Output

Print the maximum value of the expression that you can obtain.

Examples

Input

1
2
3

Output

9

Input

2
10
3

Output

60
解题思路：给定a，b，c，其顺序不能改变，向其中插入'+'或'*'或括号，则共有6种运算表达式，要求输出其中运算结果的最大值，简单枚举一下即可，水过。
AC代码：

 #include<bits/stdc++.h>
 using namespace std;
 int main(){
     int a,b,c,k=,s[];
     cin>>a>>b>>c;
     s[k++]=a+b+c;s[k++]=a*b*c;
     s[k++]=a+b*c;s[k++]=a*b+c;
     s[k++]=(a+b)*c;s[k++]=a*(b+c);
     sort(s,s+k);cout<<s[k-]<<endl;
     return ;
 }