1 files changed, 28 insertions, 0 deletions
diff --git a/others/volume1/124.pas b/others/volume1/124.pas
new file mode 100644
index 0000000..6a41c8e
--- /dev/null
+++ b/others/volume1/124.pas
@@ -0,0 +1,28 @@
+uses clib;
+
+var
+  m, n, i, k: int8;
+  a: intar;
+  s: array of array of ansistring;
+
+begin
+  readln(n, k);
+  setlength(a, n);
+  for i := 0 to n - 1 do
+    read(a[i]);
+  qsort(a);
+  m := 1;
+  for i := 1 to n - 1 do
+    if a[i] > a[i - 1] then
+      inc(m);
+  setlength(s, m);
+  for n := 0 to m - 1 do
+    begin
+      setlength(s[n], n + 2);
+      s[n][0] := '1';
+      for i := 1 to n do
+        s[n][i] := addintstr(s[n - 1][i], s[n - 1][i - 1]);
+      s[n][n + 1] := '0'
+    end;
+  writeln(addintstr(s[m - 1][k], s[m - 1][k - 1]))
+end.