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The 2nd Universal Cup Finals is coming! Check out our event page, schedule, and competition rules!
Time Limit:
8 s
Memory Limit:
1024 MB
Total points:
100
2024 陕西省队选拔赛 Day 1 (SNOI 2024 Day 1)
B. 矩阵
This problem is prepared by
bulijiojiodibuliduo .