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 C (Clang 3.8.0) (judge verdict: Wrong Answer)

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#include <stdio.h>
int main(void){
    int i,j;            //  ループ文に使用
    int x,y,z;
    int count,count2;   //  カウント用に使用
    char s[256];        //  文字列
    int a,b,c;
    a = b = c = 0;
    
    count = 0;
    count2 = 0;
    
    //  入力処理
    
    scanf("%d %d",&x,&y);
    a = x + y;
    b = x - y;
    c = x * y;
    
    if (a > b && a > c){
        printf("%d",a);
    }else if (b > a && b > c){
        printf("%d",b);
    }else{
        printf("%d",c);
    }

    //  計算処理
    

    //  出力処理

    
    
}