#coding: utf-8
##yuki_32
l=int(raw_input())
m=int(raw_input())
n=int(raw_input())

sum=l*100+m*25+n

a=sum/1000 #1000yen
b=sum%1000
c=b/100 #100yen
d=b%100
e=d/25 #25yen
f=d%25 #1yen

res=c+e+f
print res