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#! perl -slw use strict; ... { A => 0, B => 1, C => 0, D => 0 }, { A => 0, B => 0.25, C => 0.5, D => 0.25 }, ]
#! perl -slw use strict; ... 3 0.25 0.50 0.25 0.00 4 0.00 1.00 0.00 0.00 5 0.00 0.25 0.50 0.25
#! perl -slw use strict; ... 5 0.00 0.25 0.50 0.25 0.00 0.00 6 0.00 0.00 0.00 0.00 0.00 0.25