%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/apush.right { % [a b] c -> [a b c]
    exch
    [ exch aload length 2 add -1 roll ]
} bind def

/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def

/deepcopy {
    2 dict begin
    /a exch def
    a type /dicttype eq {
        <<
            a keys {
                /k exch def
                k
                a k get deepcopy
            } forall
        >>
    } {
        a type /arraytype eq {
            [
                a {
                    deepcopy
                } forall
            ]
        } {
            a type /stringtype eq {
                a dup length string cvs
            } {
                a
            } ifelse
        } ifelse
    } ifelse
    end
} bind def

/apop.right { % [a b c] -> [a b] c
    [ exch aload length 1 add 1 roll ] exch
} bind def

/keys { % dict -> array of dict keys
    [ exch
      {
          pop
      } forall
    ]
} bind def


/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/dget {
    3 1 roll
    2 copy
    known {
        get exch pop
    } {
        pop pop
    } ifelse
} bind def


% end included library code

/deleteandearn {
    0 dict begin
    /ct 0 dict def
    {
        /x exch def
        ct x 2 copy 0 dget 1 add put
    } forall
    0
    /stack [ [ ct 0 ] ] def
    {
        stack length 0 eq {
            exit
        } if
        /stack stack apop.right /c exch def def
        c 0 get length 0 eq {
            c 1 get max
        } {
            c 0 get keys {
                /d exch def
                /cc c 0 get deepcopy def
                cc d 2 copy get 1 sub put
                cc d get 0 eq {
                    cc d undef
                } if
                cc d 1 sub undef
                cc d 1 add undef
                [ cc c 1 get d add ]
                stack exch apush.right
                /stack exch def
            } forall
        } ifelse
    } loop
    end
} bind def

(deleteandearn) test.start
[3 4 2] deleteandearn 6 eq test
[2 2 3 3 3 4] deleteandearn 9 eq test
test.end