my $coin100 = <>;
chomp ($coin100);
my $coin25 = <>;
chomp ($coin25);
my $coin1 = <>;
chomp ($coin1);

my $total_money = $coin1 + $coin25 * 25 + $coin100 * 100;

my $coin;

if($total_money>=1000){
    my $thou = $total_money;
    if($thou % 1000 == 0){
        $thou /= 1000;
    }else{
        $thou = int($thou/1000);
        }
    $coin = $total_money - $thou * 1000;
}else{
    $coin = $total_money;
}

my $total_100 = int($coin/100);
my $total_25 = int(($coin - $total_100*100)/25);
my $total_1 = $coin - $total_100*100 - $total_25*25;

my $total_coin = $total_1 + $total_25 + $total_100;

print "$total_coin\n";