{"trustable":true,"prependHtml":"\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 async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\" type\u003d\"text/javascript\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv class\u003d\"panel_content\"\u003eAlex has two sequences $a_1,a_2,...,a_n$ and $b_1,b_2,...,b_m$. He wants find a longest common subsequence that consists of consecutive values in increasing order.\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"There are multiple test cases. The first line of input contains an integer $T$, indicating the number of test cases. For each test case:\u003cbr\u003e\u003cbr\u003eThe first line contains two integers $n$ and $m$ $(1 \\le n, m \\le 100000)$ -- the length of two sequences. The second line contains $n$ integers: $a_1, a_2, ..., a_n$ $(1 \\le a_i \\le 10^6)$. The third line contains $n$ integers: $b_1, b_2, ..., b_m$ $(1 \\le b_i \\le 10^6)$.\u003cbr\u003e\u003cbr\u003eThere are at most $1000$ test cases and the sum of $n$ and $m$ does not exceed $2 \\times 10^6$.\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":"For each test case, output the length of longest common subsequence that consists of consecutive values in increasing order."}},{"title":"Sample","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\u003e3\r\n3 3\r\n1 2 3\r\n3 2 1\r\n10 5\r\n1 23 2 32 4 3 4 5 6 1\r\n1 2 3 4 5\r\n1 1\r\n2\r\n1\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1\r\n5\r\n0\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}