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: Wrong Answer)

#include<stdio.h>

int answer (int a, int b){
	int solution[4];
	solution[0] = a*b;
	solution[1] = a-b;
	solution[2] = a+b;
	int ans = 0;
	
	ans = solution[0];
	for(int i = 1 ; i < 3 ; i++){
		if(solution[i] > solution[i-1]){
			ans = solution[i];
		}
	}
	return ans;
}

int main(){
	int a, b;
	scanf("%d %d", &a, &b); fflush(stdin);
	
	printf("%d", answer(a,b));
	
	return 0;
}