摘要：
Prime Ring Problem Problem Description A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately 阅读全文
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Tempter of the Bone Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maz 阅读全文
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Treasure of the Chimp Island Problem Description Bob Bennett, the young adventurer, has found the map to the treasure of the Chimp Island, where the g 阅读全文