get;
my @a = get.split(" ");
if (@a.elems > 1) {
    say "assert"
} else {
    my $b = get;
    my $c = get;
    my @d = [];
    @d.push(@a[0] + $b);
    @d.push($b + $c);
    @d.push($c + @a[0]);
    @d.sort.unique[0].say;
}