← All problemsSign in

Polygon (Subtasks Here)

CodeChefRating 2969Open on judge ↗

**This problem has subtasks based on different values of $N$**. A polygon is said to have $K$ intersections if exactly $K$ unordered pairs of its edges *properly intersect*. A pair of edges of a polygon is said to *properly intersect* if they are **not parallel** to each other, and intersect at a point that is **not an endpoint** of either edge. You will be given an integer $N$, and your task is

HINT LADDERno hints yet
L1 Observation
L2 Technique
L3 Approach
L4 Pseudo-code
🔒
L5 Full solution
L5 unlocks only if you insist twice
solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI

Sign in to chat with the tutor and save your progress.

Sign in to start