uses crt;
var n,i,j : integer;
a: array[1..100] of longint;
function kt(x : integer) : boolean;
var i,d : integer;
begin
d:=0;
for i:=1 to x do if x mod i = 0 then d:=d+1;
if d=2 then kt:=true else kt:=false;
end;
begin
write('Nhap n :'); readln(n);
for i:=1 to n do begin
write('Nhap phan tu ',i,' la :');
readln(a[i]); end;
writeln('Cac so nguyen to trong day la :');
for i:=1 to n do if kt(a[i]) then write(a[i]:3);
readln
end.
