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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
int max(int yoshio, int kao){
    int a=yoshio+kao;
    int b=yoshio-kao;
    int c=yoshio*kao;
    if(a>=b>=c || a>=c>=b){
        return a;
    }
    else if(b>=a>=c || b>=c>=a){
        return b;
    }
    else return c;
}
int main(){
    int a=0,b=0,kao=0;
    scanf("%d %d",&a,&b);
    kao=max(a,b);
    printf("%d\n",kao);
    return 0;
}