function compareTriplets(a, b) { let [_a, _b] = [a, b]; let res = [0, 0];

_a.map((f, i) => {
    if(f !== _b[i]) {
        const r = Math.max(f, _b[i]) === _b[i];
        res[~~r]++;
    }
});

return res;

}