kirito16的专栏

Let us define a regular brackets sequence in the following way:  1. Empty sequence is a regular sequence.  2. If S is a regular sequence, then (S) and [S] are both regular sequences.  3. If A and

POJ - 1260 Pearls Time Limit: 1000MS Memory Limit: 10000KB 64bit IO Format: %I64d & %I64u [Submit]   [Go Back]   [Status]   Description In Pearlania everybody is fond of pearls. One company,