#!/usr/bin/env python

totmon = 100 * int(input())
totmon += 25 * int(input())
totmon += 1 * int(input())

div = divmod(totmon, 1000)
div = divmod(div[1], 100)
ncoin = div[0]
div = divmod(div[1], 25)
ncoin += div[0] + div[1]

print(ncoin)