choi@startlink.io

https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

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https://www.acmicpc.net/problem/2873

•• (1,  1),  (R,  C) ,• (1, 1) A,  (R,  C) B

https://www.acmicpc.net/problem/2873

•• A

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•• B•

https://www.acmicpc.net/problem/2873

• , 2•• 2*2

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

https://www.acmicpc.net/problem/2873

• https://gist.github.com/Baekjoon/0b8da2949403e3c5a676