long countTriplets(vector<long> arr, long r) {

unordered_map<long,long> rm;
unordered_map<long,long> lm;

int i;
long sum=0;

for(i=0;i<arr.size();i++)
{
    rm[arr[i]]++;
}

for(i=0;i<arr.size();i++)
{
    rm[arr[i]]--;
    if(arr[i]%r==0)
    {
    sum += (lm[arr[i]/r]) * (rm[arr[i]*r]);
    }
    lm[arr[i]]++;
}

return sum;
}