{"trustable":true,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003eYou are given a grid $$$g$$$ consisting of $$$n$$$ rows each of which is divided into $$$m$$$ columns.\u003c/p\u003e\u003cp\u003eYou can swap any two integers in the same row infinitely, but you cannot swap two integers from two different rows.\u003c/p\u003e\u003cp\u003eYour task is to maximize the beauty of the grid by rearranging integers in each row. The beauty of the grid is the number of pairs ($$$i,\\,j$$$) ($$$1 \u0026lt; i \\le n,\\, 1 \\le j \\le m$$$) such that $$$g_{i,j}$$$ is equal to $$$g_{i-1,j}$$$ (i.e. $$$g_{i,j} \\equiv g_{i - 1,j}$$$).\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eThe first line contains an integer $$$T$$$ ($$$1 \\le T \\le 5$$$) specifying the number of test cases.\u003c/p\u003e\u003cp\u003eThe first line of each test case contains two integers $$$n$$$ and $$$m$$$ ($$$1 \\le n, m \\le 10^3$$$), giving the number of rows and columns in the grid, respectively.\u003c/p\u003e\u003cp\u003eThen $$$n$$$ lines follow, each line contains $$$m$$$ integers, giving the grid. All values in the grid are between $$$1$$$ and $$$10^8$$$ (inclusive). \u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003eFor each test case, print a single line containing the beauty of the grid.\u003c/p\u003e"}},{"title":"Examples","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e2\n2 3\n1 2 3\n4 1 2\n3 3\n5 7 9\n3 2 9\n5 3 2\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e2\n3\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"Note","value":{"format":"HTML","content":"\u003cp\u003eAs input/output can reach huge size it is recommended to use fast input/output methods: for example, prefer to use \u003cspan class\u003d\"tex-font-style-tt\"\u003escanf/printf\u003c/span\u003e instead of \u003cspan class\u003d\"tex-font-style-tt\"\u003ecin/cout\u003c/span\u003e in C++, prefer to use \u003cspan class\u003d\"tex-font-style-tt\"\u003eBufferedReader/PrintWriter\u003c/span\u003e instead of \u003cspan class\u003d\"tex-font-style-tt\"\u003eScanner/System.out\u003c/span\u003e in Java.\u003c/p\u003e"}}]}