import pprint
pp = pprint.PrettyPrinter(indent=2)
drives = {
    'C:':{},
    'D:':{},
    'E:':{},
    'F:':{},
    'G:':{},
}

def parse(line):
    global drives
    tokens = line.split("\\")
    for x in xrange(1,len(tokens)):
        if x==1:
            if not tokens[1] in drives[tokens[0]]:
                drives[tokens[0]][tokens[1]]={}
        else:
            evalstring = """drives[tokens[0]]["""
            for j in xrange(1,x):
                evalstring+="tokens[%d]][" % j
            exec "if not tokens[x] in " + evalstring[:-1] + " : " + evalstring[:-1] + ".update({tokens[x]:{}})"

def getcount(folder, counted=[]):
    count=0
    for stuff in folder:
        if not "." in stuff:
            count+=1 + getcount(folder[stuff])
    return count

def find_max_subs():
    maxcount=0
    for drive in drives:
        for folder in drives[drive]:
            subcount = getcount(drives[drive][folder])
            if subcount>maxcount:
                maxcount=subcount
    return maxcount

def getfilecount(folder):
    count = 0
    for stuff in folder:
        if "." in stuff:
            count += 1
        else:
            count += getfilecount(folder[stuff])
    return count

def find_max_files():
    maxcount=0
    for drive in drives:
        for folder in drives[drive]:
            subcount = getfilecount(drives[drive][folder])
            if subcount>maxcount:
                maxcount=subcount
    return maxcount

line = raw_input()
while len(line)>0:
    parse(line)
    try:
        line = raw_input()
    except:
        break

print find_max_subs(),find_max_files()