{"status": "success", "data": {"description_md": "How many different $4\\times 4$ arrays whose entries are all 1's and -1's have the property that the sum of the entries in each row is 0 and the sum of the entires in each column is 0?\n___\nLeading zeroes must be inputted, so if your answer is `34`, then input `034`. Full credit goes to [MAA](https://maa.org/) for authoring these problems. These problems were taken on the [AOPS](https://artofproblemsolving.com/) website.", "description_html": "<p>How many different <span class=\"katex--inline\">4\\times 4</span> arrays whose entries are all 1&#8217;s and -1&#8217;s have the property that the sum of the entries in each row is 0 and the sum of the entires in each column is 0?</p>&#10;<hr><p>Leading zeroes must be inputted, so if your answer is <code>34</code>, then input <code>034</code>. Full credit goes to <a href=\"https://maa.org/\">MAA</a> for authoring these problems. These problems were taken on the <a href=\"https://artofproblemsolving.com/\">AOPS</a> website.</p>", "hints_md": "", "hints_html": "", "editorial_md": "", "editorial_html": "", "flag_hint": "", "point_value": 4, "problem_name": "1997 AIME Problem 8", "can_next": true, "can_prev": true, "nxt": "/problem/97_aime_p09", "prev": "/problem/97_aime_p07"}}