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 9.2.1) (judge verdict: Accepted)

#include<stdio.h>
#include<stdlib.h>
int main()
{
     long long int a,b,c,d,x,y,z;
     scanf("%lld %lld",&a,&b);
     x=a+b;
     y=a-b;
     z=a*b;
     if(x>=y&&x>=z)
     printf("%lld\n",x);
     else if(x<=y&&y>=z)
     printf("%lld\n",y);
     else  if(x<=z&&y<=z)
     printf("%lld\n",z);
    return 0;
}