%!PS

% begin included library code
% see https://github.com/Firedrake/postscript-libraries/
/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} 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

/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


% end included library code

/goodtriplets {
    7 dict begin
    /z exch def
    /y exch def
    /x exch def
    /a exch def
    0
    0 1 a length 3 sub {
        /i exch def
        i 1 add 1 a length 2 sub {
            /j exch def
            a i get a j get sub abs x le {
                j 1 add 1 a length 1 sub {
                    /k exch def
                    a j get a k get sub abs y le
                    a i get a k get sub abs z le and {
                        1 add
                    } if
                } for
            } if
        } for
    } for
    end

} bind def

(goodtriplets) test.start
[3 0 1 1 9 7] 7 2 3 goodtriplets 4 eq test
[1 1 2 2 3] 0 0 1 goodtriplets 0 eq test
test.end