class   Tetel:
    def __init__   (self, fajl, _lista=[]):
        with open(fajl) as _fajl:
            for l in _fajl: _lista.append(l)

        self.lista  =  map(int, tuple(_lista))
    def osszegez   (self):
        query   =  sum(self.lista)
        return     query

    def maxker     (self):
        query   =  max(self.lista)
        return     query

    def feltmaxker (self, f):
        query   =  max(filter(f, self.lista))
        return     query

    def szamlal    (self, f):
        query   =  filter(f, self.lista)
        return     query.__len__()