function solution(w, h) {
function great(a,b){
if(a%b===0 || b%a===0){
if(a>=b)
return b;
else
return a;
}
else
return great(b, a%b);
}
const greatNumber = great(w,h);
const answer = (w*h)-(w+h-greatNumber);
console.log(answer);
return answer;
}