Shortened a bit

Author: Chillee

content/geometry/HalfPlane.h

@@ -40,8 +40,7 @@ vector<P> halfPlaneIntersection(vector<Line> vs) {
 		while (i!=n && ah<at && sideOf(sp(vs[i]),ans[ah])<0) ah++;
 		auto res = lineInter(sp(vs[i]), sp(deq[at]));
 		if (res.first != 1) continue;
-		ans[at++] = res.second;
-		deq[at] = vs[i];
+		ans[at++] = res.second, deq[at] = vs[i];
 	}
 	if (at - ah <= 2) return {};
 	return {ans.begin() + ah, ans.begin() + at};

content/geometry/lineIntersection.h

@@ -27,7 +27,6 @@ template <class P> pair<int, P> lineInter(P s1, P e1, P s2, P e2) {
     if (d == 0) // if parallel
         return {-(s1.cross(e1, s2) == 0 || s2 == e2), P(0, 0)};
     else {
-
         double a1 = s2.cross(e2, s1), a2 = -s2.cross(e2, e1);
         return {1, (s1 * a2 + e1 * a1) / (a1 + a2)};
     }