var
  a : array [1..5,1..5] of longint;
  i,j,sum,n : longint;
begin
  for i:=1 to 5 do
    for j:=1 to 5 do
      read(a[i,j]);
  for j:=1 to 5 do
    for i:=1 to 5 do
    sum:=sum+a[i,j,0];
  writeln(sum);
end.