Editorial for Bedao Grand Contest 11 - CHESS


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Nếu ~k > min(n, m)~, ta không thể đặt ~k~ quân xe vào bàn cờ.

Ngược lại, ta có thể đặt các quân xe theo đường chéo: ~(1, 1)~, ~(2, 2)~, ..., ~(k, k)~.


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