m100 = int(input())
m25 = int(input())
m1 = int(input())

total = m100*100 + m25*25 + m1
#print(total)
#print(int(total/1000), int((total%1000)/100), int((total%100)/25), int(total%25))
print(int((total%1000)/100) + int((total%100)/25) + int(total%25))