Var mass:array[1..10] of integer;
var i:integer;
var sum: integer;
var ans: real;
begin
Randomize;
sum:=0;
for i:=1 to 10 do begin
mass[i]:=Random (41) - 20; write(mass[i],' ');
end;
for i:=1 to 10 do
sum+=mass[i];ans:=sum/10;
writeln('Otvet: ', ans);
end.