coin100 = int(raw_input())
coin25 = int(raw_input())
coin1 = int(raw_input())

coin25 += coin1 / 25
coin1 = coin1 % 25
coin100 += coin25 / 4
coin25 = coin25 % 4
coin100 = coin100 % 10

print coin1 + coin25 + coin100