var n,m:longint;
        a,b,max1,max11,max2,max22:longint;



 procedure citire;
 var i:longint;
 begin

  readln(n,m); max1:=0; max11:=0; max2:=0; max22:=0;

  for i:=1 to n do
        begin
         readln(a,b);
         if a>max1 then begin
                        max11:=max1;
                        max1:=a;
                        end
         else if (a<max1) and (a>max11) then max11:=a;
         if b>max2 then begin
                        max22:=max2;
                        max2:=b;
                        end
         else if (b<max2) and (b>max22) then max22:=b;
        end;

  writeln(max1+max11,' ',max2+max22);
 end;


begin
 citire;
end.