Problem:
Score : 100 points

Problem Statement

We have two integers: A and B.

Print the largest number among A + B, A - B, and A \times B.

Constraints

All values in input are integers.

-100 \leq A,\ B \leq 100

Input

Input is given from Standard Input in the following format:

A B

Output

Print the largest number among A + B, A - B, and A \times B.

Sample Input 1

-13 3

Sample Output 1

-10

The largest number among A + B = -10, A - B = -16, and A \times B = -39 is -10.

Sample Input 2

1 -33

Sample Output 2

34

The largest number among A + B = -32, A - B = 34, and A \times B = -33 is 34.

Sample Input 3

13 3

Sample Output 3

39

The largest number among A + B = 16, A - B = 10, and A \times B = 39 is 39.

Solution in JavaScript (node.js v5.12) (judge verdict: Accepted)

// inputに入力データ全体が入る
function Main(input) {
		input = input.split(" ");
	
	//文字列から10進数に変換するときはparseIntを使います
	    var A = parseInt(input[0], 10);
         var B = parseInt(input[1], 10);
    var C = A + B;
    var D = A - B;
    var E = A * B;
    
    if ( C >= D ) {if ( C>=E){console.log(C);}
                             else {console.log(E);}
                             }
                    else if (D>=E){console.log(D);}else{console.log(E);}         
  
  
  
  	   }    //    1    
     
  //*この行以降は編集しないでください（標準入出力から一度に読み込み、Mainを呼び出します）
Main(require("fs").readFileSync("/dev/stdin", "utf8"));