PUMaC 2007 · 个人决赛（A 组） · 第 2 题

PUMaC 2007 — Individual Finals (Division A) — Problem 2

We have a 2007 × 2007 square table filled with nonnegative integers. For each entry of 0 in the table, the sum of the elements that are in the same row or column as that entry is at least 2007. Find the minimum sum of all the elements of such a table.

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