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use 5.20.0;
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use List::AllUtils qw/ /;
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use experimental qw/ signatures postderef /;
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my %g = map { split ': ' } <>;
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my $i = 1;
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until( pass($i) ) {
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$i++;
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}
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say '>>>',$i;
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sub pass($i) {
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for my $g ( keys %g ) {
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return unless ($i+$g) % (2*($g{$g}-1));
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}
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return 1;
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}
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