program tongam;
uses crt;
var A:array[1..100] of integer;
n,i,tong:integer;
begin
clrscr;
write('Nhap so luong phan tu N: '); readln(n);
tong:=0;
for i:=1 to n do
begin
write('Phan tu thu ',i,': '); readln(A[i]);
if A[i]<0 then tong:=tong+A[i];
end;
write('Tong cac phan tu am trong day la: ',tong);
readln
end.
