Program baitap;

Uses crt;

var A:array[1..10000] of integer;

      n,i,ta,td,d:integer;

begin

clrscr;

write('Nhap so luong phan tu: ');  readln(n);

writeln('NHAP GIA TRI TUNG PHAN TU CUA MANG');

for i:=1 to n do

 begin

  write('phan tu thu ',i,': ');

  readln(A[i]);

 end;

write('Cac so chan co trong day la: ');

for i:=1 to n do

 if A[i] mod 2=0 then

  write(A[i],' ');

writeln;

write('Cac so le co trong day la: ');

for i:=1 to n do

 if A[i] mod 2=1 then

  write(A[i],' ');

ta:=0;   td:=0;

for i:=1 to n do

 if A[i]<0 then ta:=ta+A[i]

 else td:=td+A[i];

writeln('Tong cac so am trong day la: ',ta);

writeln('Tong cac so duong co trong day la: ',td);

d=0;

for i:=1 to n do

 if A[i]=0 then d:=d+1;

write('Co ',d,' so 0 o trong day');

readln

end.

var m: array[1..100] of integer;
    n,i,max,j,t,scp: integer;
begin
 clrscr;
  write ('nhap n: ');  readln (n);
  for i:=1 to n do
   begin
    write ('nhap m[',i,']: ');  readln (m[i]);
    if max<=abs(m[i]) then max:=abs(m[i]);
   end;
  for i:=1 to n-1 do
   for j:=i+1 to n do
    if m[i]<m[j] then
     begin
      t:=m[i];
      m[i]:=m[j];
      m[j]:=t;
     end;
  write ('day sau khi sap xep giam dan: ');
  for i:=1 to n do write (m[i],' ');
  writeln;
  writeln ('gia tri tuyet doi lon nhat trong day: ',max);
  write ('cac so chinh phuong trong day: ');
  for i:=1 to n do
   begin
    scp:=trunc(sqrt(m[i]));
    if sqr(scp)=m[i] then
    write (m[i],' ');
   end;
 readln;
end.