program tinh_tich;
uses crt;
var A:array[1..1000] of integer;
L,i:integer;
tich:int64;
begin
clrscr;
write('Nhap L: '); readln(L);
tich:=1;
for i:=1 to L do
begin
write('Nhap so thu ',i,': '); readln(A[i]);
tich:=tich*A[i];
end;
write('Tich cac so la: ',tich);
readln;
end.