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>
#include<stdlib.h>
int main(void) {
  int a, b;
  //a = atoi(argv[1]);
  //b = atoi(argv[2]);
  scanf("%d %d\n", &a, &b);
  int c,d,e;
  c = a + b;
  d = c;
  printf("A + B = %d, ", c);
  c = a - b;
  if(c > d) {d = c;}
  printf("A + B = %d, ", c);
  c = a * b;
  if(c > d) {d = c;}
  printf("A + B = %dの中で最大の数は%dです。\n", c, d);
  return 0;
}