1 files changed, 34 insertions, 0 deletions
diff --git a/2ndary/09/Q-Huế-2014/bai3.pas b/2ndary/09/Q-Huế-2014/bai3.pas
new file mode 100644
index 0000000..91fc05f
--- /dev/null
+++ b/2ndary/09/Q-Huế-2014/bai3.pas
@@ -0,0 +1,34 @@
+var
+  x, y: string;
+  f: text;
+  a: array[0 .. 9] of shortint;
+  b: shortint;
+  c: char;
+
+begin
+  assign(f, 'INPUT.INP');
+  reset(f);
+  readln(f, x);
+  readln(f, y);
+  close(f);
+
+  fillchar(a, 0, sizeof(a));
+
+  for c in x do
+    a[ord(c) - 48] := 1;
+
+  for c in y do
+    begin
+      b := ord(c) - 48;
+      if a[b] = 1 then
+        a[b] := 2
+    end;
+
+  assign(f, 'OUTPUT.OUT');
+  rewrite(f);
+  for b := 9 downto 0 do
+    if a[b] = 2 then
+      write(f, b);
+  writeln(f);
+  close(f)
+end.