use strict;
use warnings;

my @coins = (100, 25, 1);
my($in, $tgt) = (0, 0);
for(0..2){
  $in = <STDIN>;
  chomp $in;
  $tgt += ($in*$coins[$_]);
}
if(length $tgt > 3){
  $tgt = substr($tgt, -3, 3)+0;
}

my %f = (0 => 0);
my %n_f = %f;
my $val = 0;
my $quo = 0;
while(!defined($f{$tgt})){
  for my $i (keys %f){
    for my $j (@coins){
      $val = $i+$j;
      $quo = $f{$i}+1;
      if(!defined($n_f{$val})){
        $n_f{$val} = $quo;
      }else{
        if($quo < $n_f{$val}){
          $n_f{$val} = $quo;
        }
      }
    }
  }
  %f = %n_f;
}

print $f{$tgt};