const
    auto = true;

var
    a: array[1..100, 1..100]of real;
    b: array[1..100]of real;
    n, m, j, i: integer;
    gmax, min, max: real;

begin
    read(n, m);
    for i := 1 to n do
        for j := 1 to m do
        begin
            if auto then
                a[i, j] := random(100)
            else           
                read(a[i, j]);
               
            if abs(gmax) < abs(a[i, j]) then
                gmax := a[i, j];
        end;
   
    for i := 1 to n do
    begin
        min := a[i, 1] / gmax;
        max := a[i, 1] / gmax;
       
        for j := 1 to m do
        begin
            a[i, j] := a[i, j] / gmax;
            if min > a[i, j] then min := a[i, j];
            if max < a[i, j] then max := a[i, j];
           
            write(a[i, j]:5:2, ' ');
        end;
       
        b[i] := max - min;
        writeln(' => ', b[i]:5:2);
    end;
end.