Problem:
Score : 100 points

Problem Statement

You are given two integers A and B.
Find the largest value among A+B, A-B and A \times B.

Constraints

-1000 \leq A,B \leq 1000

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

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

Sample Input 1

3 1

Sample Output 1

4

3+1=4, 3-1=2 and 3 \times 1=3. The largest among them is 4.

Sample Input 2

4 -2

Sample Output 2

6

The largest is 4 - (-2) = 6.

Sample Input 3

0 0

Sample Output 3

0

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include "stdio.h"

int main(){

int A;
int B;
int sum;
int cal;
int desum;
scanf("%d%d\n",&A,&B );
sum=A+B;
cal=A*B;
desum=A-B;
int max=sum;

if(max<cal){
  max=cal;
}
if(max<desum){
  max=desum;
}
printf("%d\n", max);


return 0;




}