P-complete problem

例句：

1. 1. The P-complete problem is a challenging task that requires deep understanding of the underlying mathematical structure.
   P-完全问题是一道具有挑战性的任务，需要深入理解底层数学结构。
2. 2. This algorithm solves the P-complete problem in polynomial time.
   这个算法以多项式时间解决了P-完全问题。
3. 3. The P-complete problem has been studied extensively for decades, but no efficient solution hasbeen found.
   P-完全问题已经研究了几十年，但尚未找到有效的解决方案。