my $cnt;
for my $f ( 0 .. 20 ) {
  for my $z ( 0 .. 10 ) {
    for my $zw ( 0 .. 5 ) {
      for my $fu ( 0 .. 2 ) {
        for my $hu ( 0 .. 1 ) {
          $cnt++ if $f * 5 + $z * 10 + $zw * 20 + $fu * 50 + $hu * 100 == 100;
        }
      }
    }
  }
}
print $cnt;