# -*- coding:utf-8 -*-

if __name__ == "__main__":
	l = input()
	m = input()
	n = input()
	m += n // 25
	n -= (n // 25) * 25
	l += m // 4
	m -= (m // 4) * 4
	l -= (l // 10) * 10
	print n + l + m