my $L = <STDIN>;
my $M = <STDIN>;
my $N = <STDIN>;

my $total = $L * 100 + $M * 25 + $N;

my $b = int($total / 1000);
my $mod = $total % 1000;
my $l = int($mod / 100);
$mod = $mod % 100;
my $m = int($mod / 25);
my $n = $mod % 25;

my $coins = $l + $m + $n;
print $coins;