mf = open("/Users/koc/Desktop/abc/stars.txt", "r")
mw = open("/Users/koc/Desktop/abc/out2.txt", "w")

names = []
dista = []
brigh = []

hline = mf.readline()
for s in mf:
    t = s[0:len(s)-1]
    u = t.split()
    names.append(u[0])
    dista.append(float(u[1]))
    brigh.append(float(u[2]))

for i in range(len(names)):
    if dista[i] < 50:
        s1 = names[i]
        if len(s1) < 8:
            s1 = s1 + "\t\t"
        else:
            s1 = s1 + "\t"
        s2 = str(dista[i]) + "\t"
        s3 = str(brigh[i]) + "\n"
        s = s1 + s2 + s3
        mw.write(s)
mw.close()