%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/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

/listmax {
    { max } reduce
} bind def

/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


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

/map { % array proc -> array
    2 dict begin
    /p exch def
    [ exch
      {
          p
      } forall
    ]
    end
} 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

/enumerate.array {
    1 dict begin
    /a exch def
    [
      0 1 a length 1 sub {
          [ exch dup a exch get ]
      } for
    ]
    end
} bind def


% end included library code

/maximumones {
    0 dict begin
    /ax exch { { add } reduce } map def
    /am ax listmax def
    -1
    ax enumerate.array {
        aload pop
        /n exch def
        /i exch def
        n am eq {
            pop i
            exit
        } if
    } forall
    1 add
    end
} bind def

(maximumones) test.start
[[0 1] [1 0]] maximumones 1 eq test
[[0 0 0] [1 0 1]] maximumones 2 eq test
[[0 0] [1 1] [0 0]] maximumones 2 eq test
test.end