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题目链接： "LightOJ 1030" Description You are in a cave, a long cave! The cave can be represented by a $1 \times N$ grid. Each cell of the cave can contain 阅读全文
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题目链接： "LightOJ 1027" Description You are in a maze; seeing $n$ doors in front of you in beginning. You can choose any door you like. The probability f 阅读全文
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题目链接： "POJ 3268" Description One cow from each of $N$ farms $(1 ≤ N ≤ 1000)$ conveniently numbered $1..N$ is going to attend the big cow party to be h 阅读全文