Program sum;
uses Crt;
Var i: integer;
    sum, p, sr : real;
    a : array [1..25] of real;
begin
Clrscr;
For i:=1 to 25 do
    begin
         write ('a[',i,']=');
         readln(a[i]);
    end;
sum:=0;
For i:=1 to 25 do begin

if a[i]>0 then    sum:=sum+a[i];

end;

sr:=sum/25;

For i:=1 to 25 do begin

if a[i]<0 then    p:=p*a[i];

end;
Writeln ('Sum=',sum:5:2);

Writeln ('p=',p:5:2);

Writeln ('Sr=',sr:5:2);
readln;
end.