Problem: There is a $$$n\times n$$$ grid,you must choose $$$n$$$ numbers from it and you must guarantee that any two points cannot be in the same row or column.Maximize the sum of the numbers you've chosen and print it. $$$n\leq 2000$$$.
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A question
Problem: There is a $$$n\times n$$$ grid,you must choose $$$n$$$ numbers from it and you must guarantee that any two points cannot be in the same row or column.Maximize the sum of the numbers you've chosen and print it. $$$n\leq 2000$$$.
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