import java.util.*;
class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
int B = sc.nextInt();
if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
}
}} import java.util.*; util.* java class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
int B = sc.nextInt();
if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
}
}} Main public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
int B = sc.nextInt();
if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
}
} main {
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
int B = sc.nextInt();
if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
}
} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int A = sc.nextInt(); A sc.nextInt() sc.nextInt sc int B = sc.nextInt(); B sc.nextInt() sc.nextInt sc if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
} B<0 B 0 {
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
} if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
} A-B>A*B A-B A B A*B A B {
System.out.println(A-B);
} System.out.println(A-B) System.out.println System.out System System.out A-B A B {
System.out.println(A*B);
} System.out.println(A*B) System.out.println System.out System System.out A*B A B {
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
} if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
} A+B>A*B A+B A B A*B A B {
System.out.println(A+B);
} System.out.println(A+B) System.out.println System.out System System.out A+B A B {
System.out.println(A*B);
} System.out.println(A*B) System.out.println System.out System System.out A*B A B String[] args args
import java.util.*;
class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
int B = sc.nextInt();
if(B<0){
if(A-B>A*B){
System.out.println(A-B);
}else{
System.out.println(A*B);
}
}else{
if(A+B>A*B){
System.out.println(A+B);
}else{
System.out.println(A*B);
}
}
}}