import strutils

var
  l = stdin.readLine.parseInt
  m = stdin.readLine.parseInt
  n = stdin.readLine.parseInt
  money = 100 * l + 25 * m + n
  res = 0

money = money mod 1000
res = money div 100
money = money mod 100
res += money div 25
money = money mod 25
res += money

echo res