L = int(raw_input())
M = int(raw_input())
N = int(raw_input())
amount = int(L*100 + M*25 + N*1)

amount = amount - amount / 1000 * 1000
coin100 = amount / 100
amount = amount - amount / 100 * 100
coin25 = amount / 25
amount = amount - amount / 25 * 25

print coin100 + coin25 + amount