-foreach my $src_i (0..$#islandids) {
- my $src_isle= $islandids[$src_i];
- my $src_cond= $sd_condition->('sell',$src_i);
+my %ipair2subflowinfs;
+# $ipair2subflowinfs{$orgi,$dsti}= [ [$orgix,$distix], ... ]
+
+my @subflows;
+# $subflows[0]{Flow} = { ... }
+# $subflows[0]{Org} = $orgix
+# $subflows[0]{Dst} = $dstix
+
+foreach my $org_i (0..$#islandids) {
+ my $org_isle= $islandids[$org_i];
+ my $org_cond= $sd_condition->('sell',$org_i);