program Project5;
Var
i, j: Integer;
a: array [1 .. 12, 1 .. 12] of Integer;
sum, count: real;
begin
for i := 1 to 12 do
begin
for j := 1 to 12 do
begin
a[i, j] := Random(9);
Writeln(a[i, j], ' ');
end;
Writeln;
end;
sum := 0;
for i := 1 to 12 do
sum := sum + a[i, 2];
count := sum / 12;
Writeln(count:1:4);
readln;
end.