chomp(my $be = <STDIN>);
chomp(my $n = <STDIN>);
chomp(my $af = <STDIN>);

my $be_num = $be =~ s/o/o/g;
my $af_num = $af =~ s/o/o/g;

my $result;
if (not $be_num == $af_num){
    $result = "SUCCESS";
}
else {
    if ( $n == 0) {
        $result = $be ne $af ? "SUCCESS" : "FAILURE";
    }
    elsif (not $n == 1) {
        $result = "FAILURE";
    }
    else {
        my $impo = impossible($be);
        $result = $impo eq $af ? "SUCCESS" : "FAILURE";
    }
}


print "$result\n";

sub impossible {
    my $t = shift;
    return "oxo" if $t eq "oxo";
    return "xox" if $t eq "xox";
    return "oox" if $t eq "xoo";
    return "xoo" if $t eq "oox";
    return "xxo" if $t eq "oxx";
    return "oxx" if $t eq "xxo";
}