← All problemsSign in

K Perfect Matchings

CodeChefRating 2455Open on judge ↗

You are given a bipartite graph $G = (U, V , E)$, and an integer $K$. $U$ and $V$ are the two bipartitions of the graph such that |$U$| = |$V$| = $N$ , and $E$ is the edge set. The vertices of $U$ are {$1, 2, . . . , N$ } and that of $V$ are {$N + 1, N + 2, . . . , 2N$ }. You need to find out whether the total number of different perfect matchings in $G$ is strictly greater than $K$ or not. Recal

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