class Tetel():
	def __init__(self, fajl_nev):
		self.szamok = [int(szam) for szam in open(fajl_nev)]

	def maxker(self):
		maximum = self.szamok[0]
		for i in range(1, len(self.szamok)):
			if self.szamok[i] > maximum:
				maximum = self.szamok[i]
		return maximum

	def feltmaxker(self, fv):
		l = False
		felt_max = self.szamok[0]
		for i in range(len(self.szamok)):
			if fv(self.szamok[i]) and not l:
				felt_max = self.szamok[i]
				l = True
			elif fv(self.szamok[i]) and l:
				if self.szamok[i] > felt_max:
					felt_max = self.szamok[i]
		return felt_max

	def osszegez(self):
		s = 0
		for i in range(len(self.szamok)):
			s += self.szamok[i]
		return s

	def szamlal(self, fv):
		c = 0
		for i in range(len(self.szamok)):
			if fv(self.szamok[i]):
				c += 1
		return c