teste = int(input("Testide arv? "))
# Tsükkel kordub nii mitu korda, kui on teste (testide numbrid 0 .. 10)
for i in range(teste+1):
    nimed = list()
    tulemused = list()
    fm_s = open("input"+str(i)+".txt","r")
    mitu = int(fm_s.readline())
    for rida in fm_s:
        nimi,tulemus = rida.split()
        tulemused.append(int(tulemus))
        nimed.append(nimi)
    fm_s.close()
    summa_M=0
    summa_J=0
    arv_M =0
    arv_J =0

    for i in range(mitu):
        if nimed[i] == "M":
            summa_M = summa_M + tulemused[i]
            arv_M = arv_M + 1
        else:
            summa_J = summa_J + tulemused[i]
            arv_J = arv_J + 1

    if arv_M != 0:
        kesk_M = summa_M/arv_M
    else:
        kesk_M = 0
        
    if arv_J != 0:
        kesk_J = summa_J/arv_J
    else:
        kesk_J = 0
        
# Avame väljundfaili (mis on sama numbriga kui sisendfail) ja kirjutame sinna vastuse.
    fm_v = open("vastus"+str(i)+".txt","w")
    if kesk_M > kesk_J:
        fm_v.write("M\n")
    elif kesk_M == kesk_J:
        fm_v.write("V\n")
    else:
        fm_v.write("J\n")
    fm_v.close()