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We Need MedicineTime Limit: 10 Seconds      Memory Limit: 65536 KB      Special JudgeA terrible disease broke out! The disease was caused by a new type of virus, which will lead to lethal ly

A Volcanic IslandTime Limit: 2 Seconds      Memory Limit: 65536 KB      Special JudgeAn underwater volcano has erupted massively in somewhere of the deep Atlantis Ocean. This large eruption

Chinese KnotTime Limit: 2 Seconds      Memory Limit: 65536 KB      Special JudgeChinese knot is a decorative handicraft that began as a form of Chinese folk artifact in the Tang and Song Dyn

Sawtooth PuzzleTime Limit: 10 Seconds      Memory Limit: 65536 KBRecently, you found an interesting game called Sawtooth Puzzle. This is a single-player game played on a grid with 3 x 3 cells.