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: Runtime Error)

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

struct ststr {
    char str[11];
};

void bsort(char str[]){
    int i,j;
    int len=strlen(str);
    char tmp;
    for(i=0;i<len-1;i++){
        for(j=i+1;j<len;j++){
            if(str[i]>str[j]){
                tmp = str[i];
                str[i] = str[j];
                str[j] = tmp;
            }
        }
    }
}

int main(){
    int N,i,j;
    char buff[11];
    scanf("%d ",&N);
    struct ststr data[N];
    for(i=0;i<N;i++){
        scanf("%s",buff);
        bsort(buff);
        strcpy(data[i].str,buff);
    }
    int s=0;
    for(i=0;i<N-1;i++){
        for(j=i+1;j<N;j++){
            if(strcmp(data[i].str,data[j].str)==0)s++;
        }
    }
    printf("%d",s);
}