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Bessie wants to navigate her spaceship through a dangerous asteroid field in the shape of an N x N grid (1 ⇐ N ⇐ 500). The grid contains K asteroids ( 阅读全文
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Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulous 阅读全文
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HDU 1540 During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally spea 阅读全文
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题目描述 Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy 阅读全文