This means that there are no known algorithms for finding an optimal solution in polynomial time.

There are certain tasks which classical computers cannot perform "efficiently" (that is, in polynomial time) according to any known algorithm.

This assumption is then used to design an efficient algorithm or to derive the complexity of a known algorithm.

There is a number of known algorithms that can optimally pre-process a given tree and answer such queries in constant time.

For five or more players, the only known exact algorithms have no fixed bound on the number of cuts required.

FEC adds redundancy to the transmitted information with a known algorithm.

The encryption process which is used by default uses a known algorithm.

There is no known deterministic algorithm that runs in polynomial time for finding such a .

There is no known algorithm for finding such an , except the trial and error method.

The above implementations have the best worst-case behavior of any known algorithm.