【洛谷 P1879】[USACO 06Nov]Corn Fields G

題目描述 題目 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 corn for the cows on a number of squares. Regre

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