uses crt;
const m=4; n=4;
var   x: array[1..m,1..n] of integer;
      i,j,a,b: integer;
begin
 randomize;
     for i:=1 to m do
      for j:=1 to n do
        x[i,j]:=Random(100);

     for i:=1 to m do begin
      if i mod 2 = 0 then
       for j:=1 to n do
        if x[i,j] > a then
        a:=x[i,j];
     end;
  writeln(a);
end.