1 files changed, 0 insertions, 36 deletions
diff --git a/datastructures/dynamicConvexHull.cpp b/datastructures/dynamicConvexHull.cpp
deleted file mode 100644
index d669847..0000000
--- a/datastructures/dynamicConvexHull.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-struct Line {
-	mutable ll m, b, p;
-	bool operator<(const Line& o) const {return m < o.m;}
-	bool operator<(ll x) const {return p < x;}
-};
-
-struct HullDynamic : multiset<Line, less<>> {
-	// (for doubles, use inf = 1/.0, div(a,b) = a/b)
-	ll div(ll a, ll b) {return a / b - ((a ^ b) < 0 && a % b);}
-
-	bool isect(iterator x, iterator y) {
-		if (y == end()) {x->p = INF; return false;}
-		if (x->m == y->m) x->p = x->b > y->b ? INF : -INF;
-		else x->p = div(y->b - x->b, x->m - y->m);
-		return x->p >= y->p;
-	}
-
-	void add(ll m, ll b) {
-		auto x = insert({m, b, 0});
-		while (isect(x, next(x))) erase(next(x));
-		if (x != begin()) {
-			x--;
-			if (isect(x, next(x))) {
-				erase(next(x));
-				isect(x, next(x));
-		}}
-		while (x != begin() && prev(x)->p >= x->p) {
-			x--;
-			isect(x, erase(next(x)));
-	}}
-
-	ll query(ll x) {
-		auto l = *lower_bound(x);
-		return l.m * x + l.b;
-	}
-};