function solution(a, b) {
var answer = 0;
var atmp = a;
var btmp = b;
if(atmp.toString() + btmp.toString() >= 2*atmp.toString() * btmp.toString() ){
answer = atmp.toString() + btmp.toString();
}
else{
answer = 2 * atmp.toString() * btmp.toString();
}
return parseInt(answer);
}