The exact cover problem is NP-complete and is one of Karp's 21 NP-complete problems.
It is one of Karp's 21 NP-complete problems. The exact cover problem is NP-complete.
The exact cover problem is NP-complete. It is one of Karp's 21 NP-complete problems.
The exact cover problem is NP-complete. It is one of Karp's 21 NP-complete problems.