import math
L=int(input())
M=int(input())
N=int(input())

total=L*100+M*25+N

Bc=math.floor(total/1000)
Lc=math.floor((total-Bc*1000)/100)
Mc=math.floor((total-Bc*1000-Lc*100)/25)
Nc=total-Lc*100-Mc*25-Bc*1000

print(Bc+Lc+Mc+Nc)