function compareTriplets(a, b) {

if (a.length <=0 || b.length <=0) return 0;

let alice=[0,0]; 

for(let i = 0; i<a.length; i++){
    if(a[i] > b[i]) {
        alice[0]++;
    } else if(b[i]>a[i]){
        alice[1]++;
    }
}
return alice;

}