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>
#include <stdlib.h>
#include <string.h>
#include <math.h>
 

int main()
{
  //int A, B, C, X, Y;
//  int m[101]={};
  int A, B, C, D;
  //int ans=1;
  char comp[6]={};
//  int sosu[20000]={};
  char s[5001]={};
  int len;
  int ans[2]={};
  int i,j,k;
  int flag=0;  
//    int k=0;

  
  scanf("%d %d", &A, &B);
  ans[0]=A+B;
  ans[1]=A-B;
  ans[2]=A*B;

  if(ans[0]<ans[1]) ans[0]=ans[1];
  if(ans[0]<ans[2]) ans[0]=ans[2];
  
  
  printf("%d\n", ans[0]);
  
return 0;
}