while 1:
    try:
        s = input()
        l, m = 0, 0
        n = s.__len__()
        temp = ''
        res = ''
        while l < n:
            c = s[l]
            l += 1
            if c.isdigit():
                temp += c
            else:
                if temp:
                    if m < temp.__len__():
                        res = temp
                        m = temp.__len__()

                    elif m == temp.__len__():
                        res += temp

                        m = temp.__len__()
                    temp = ''
        if temp:
            if m < temp.__len__():
                res = temp
                m = temp.__len__()

            elif m == temp.__len__():
                res += temp

                m = temp.__len__()

        print(res.strip() + ',' + str(m))        
    except:
        break