const n=10;
var
a:array[1..n] of integer;
i,s,k:integer;
begin
Randomize;
for i:=1 to n do
 begin
 a[i]:=random(51)-25;
 write(a[i]:4);
 end;
writeln;
s:=0; k:=0;
for i:=1 to n do
 if a[i]<0 
   then begin s:=s+a[i]; k:=k+1; end;
writeln('s = ',s,'  k = ',k);
end.

Пример:
  21   5 -11  -6 -14  -9   1 -25   9   5
s = -65  k = 5