def countTriplets(arr, r):
    res = 0
    d = {x: [0, 0] for x in arr}
    for e in arr:
        a = e / r
        b = a / r
        if b in d:            
            res += d[b][1]
        if a in d:
            d[a][1] += d[a][0]
        d[e][0] += 1
    return res