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P与NP问题是计算机科学中最重要的一个问题之一。
The P versus NP problem is one of the most important problems in computer science.
I have realized that fighting for women's rights has too often become synonymous with man-hating. This has to stop.
Global food security starts with local action and collaboration.
It is only in the mysterious equations of love that any logical reasons can be found.