import sequtils,strutils,math
type
    kakaku = tuple[t : float64, n : float64]
var
    k = stdin.readline.parseInt
    a,b,t,n : float64
    ai,bi : int
    M,m : float64
    M2,m2,n2,index : int
    s : string
    kTable = newSeqWith(11,newSeqWith(11,newSeq[kakaku](0)))
for i in 1..k:
    (a,b,t) = stdin.readline.split.map(parseFloat)
    (ai,bi) = (a.int,b.int)
    n = 1.0
    m = 0.0
    M = 1.0
    if kTable[ai][bi].len == 0 or t > kTable[ai][bi][^1].t:
        index = kTable[ai][bi].len
        while true:
            if pow(n,a) * pow(ln(n),b) <= t:
                m = n
                n *= 2.0
            else:
                break
        M = n
    else:
        if t < kTable[ai][bi][0].t:
            M = kTable[ai][bi][0].n
            m = 0.0
            index = 0
        else:
            M2 = kTable[ai][bi].len
            m2 = 0
            while M2 - m2 > 1:
                n2 = (M2 + m2) div 2
                if kTable[ai][bi][n2].t < t:
                    m2 = n2
                else:
                    M2 = n2
            M = kTable[ai][bi][M2].n
            m = kTable[ai][bi][m2].n
            index = M2
    while M - m > 0.000_000_000_5:
        n = (M + m) / 2.0
        if pow(n,a) * pow(ln(n),b) <= t:
            m = n
        else:
            M = n
    kTable[ai][bi].insert((t, M),index)
    s = $M
    echo s[0..11]