SP8846 MAHJONG - Fudan Extracurricular Lives

Click [here](../../../content/john_jones:mahjong.pdf) to get the PDF version of this problem. It seems that the style of this problem is the same as problem TRACTOR added by me about 2 years ago, but this one is far easier than that one. This problem is solved by a team at 286 minutes after the real-time contest start.

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