c100,c25,c1=$stdin.read.split(?\n).map(&:to_i)
sum = c100*100+c25*25+c1*1
b1000 = sum/1000
sum -= b1000*1000
c100 = sum/100
sum -= c100*100
c25 = sum/25
sum -= c25*25
c1 = sum
puts c100+c25+c1