1 files changed, 0 insertions, 13 deletions
diff --git a/math/permIndex.cpp b/math/permIndex.cpp
deleted file mode 100644
index 4cffc12..0000000
--- a/math/permIndex.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-ll permIndex(vector<ll> v) {
-	Tree<ll> t;
-	reverse(all(v));
-	for (ll& x : v) {
-		t.insert(x);
-		x = t.order_of_key(x);
-	}
-	ll res = 0;
-	for (int i = sz(v); i > 0; i--) {
-		res = res * i + v[i - 1];
-	}
-	return res;
-}