program pro2_ivanov;
var
a: array [1 .. 10, 1 .. 10] of integer;
i, j, sum: integer;
begin
sum := 0;
randomize;
for i := 1 to 10 do
begin
for j := 1 to 10 do
begin
a[i, j] := random(31) + 20;
Write(a[i, j], ' ');
if (a[i, j] mod 2) = 0 then
sum := sum + a[i, j];
end;
WriteLn;
end;
WriteLn;
WriteLn('Сумма чётных чисел=', sum);
ReadLn;
end.