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 main(){
    int a,b,c,d,e,f,g;

 
    scanf("%d", &a);
    scanf("%d", &b);
    if(a< -1000 && b <= 1000){
    	printf("Eror");
	}
	
	else if((a == 0) && (b==0)){
	
	printf("0");
}
	
	else{
	c = a + b;
    d = a - b;
    e = a * b;
    
    
	if((c>d) && (c>e))
	printf("%d",c);
	
	if((d>c) && (d>e))
	printf("%d",d);
	
	if((e>d) && (e>c))
	printf("%d",e);
	
	if((c==d))
	printf("%d",d);
	
	if((d==e))
	printf("%d",d);
	
	if((e==c))
	printf("%d",c);
	
	
	
	}
	
	return 0 ;
	
}