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#!/usr/bin/perl ... /../g; print "$n => @bytes\n"; }
0 => 00 2 => 02 ... -200000000000000 => 00 80 0B DF 19 4A FF FF -2000000000000000 => 00 00 73 B6 02 E5 F8 FF -20000000000000000 => 00 00 7E 20 1B F2 B8 FF