%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/reduce { % array proc -> value
    2 dict begin
    /p exch def
    /a exch def
    a 0 get
    1 1 a length 1 sub {
        a exch get
        p
    } for
    end
} bind def


/listmax {
    { max } reduce
} 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

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


% end included library code

/highestrow {
    [ exch
      {
          { add } reduce
      } forall
    ]
    listmax
} bind def

(highestrow) test.start
[[4 4 4 4] [10 0 0 0] [2 2 2 9]] highestrow 16 eq test
[[1 5] [7 3] [3 5]] highestrow 10 eq test
[[1 2 3] [3 2 1]] highestrow 6 eq test
[[2 8 7] [7 1 3] [1 9 5]] highestrow 17 eq test
[[10 20 30] [5 5 5] [0 100 0] [25 25 25]] highestrow 100 eq test
test.end