use strict;
use warnings;

my %month = (28 => [2], 30 => [4, 6, 9, 11], 31 => [1, 3, 5, 7, 8, 10, 12]);
my $ans = 0;
for my $i (keys %month) {
  for my $j (@{$month{$i}}){
    for my $k (1..$i){
      if($j == eval(join('+', split('', $k)))){
        $ans++;
      }
    }
  }
}

print $ans;