1 files changed, 0 insertions, 9 deletions
diff --git a/math/inversions.cpp b/math/inversions.cpp
deleted file mode 100644
index 9e47f9b..0000000
--- a/math/inversions.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-ll inversions(const vector<ll>& v) {
-	Tree<pair<ll, ll>> t; //ordered statistics tree @\sourceref{datastructures/pbds.cpp}@
-	ll res = 0;
-	for (ll i = 0; i < sz(v); i++) {
-		res += i - t.order_of_key({v[i], i});
-		t.insert({v[i], i});
-	}
-	return res;
-}