my $score = 100_000; open my $IN, '<', $arq or die "Cannot open '$arq' because: $!"; while ( <$IN> ) { chomp; open my $IN1, '<', $_ or die "Cannot open '$_' because: $!"; while ( <$IN1> ) { my @temp = split /\t/; if ( $temp[ 1 ] < $score ) {