{"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\"\u003elxhgww got a sequence contains n characters which are all \u00270\u0027s or \u00271\u0027s.\u003cbr\u003eWe have five operations here:\u003cbr\u003eChange operations:\u003cbr\u003e0 a b change all characters into \u00270\u0027s in [a , b]\u003cbr\u003e1 a b change all characters into \u00271\u0027s in [a , b]\u003cbr\u003e2 a b change all \u00270\u0027s into \u00271\u0027s and change all \u00271\u0027s into \u00270\u0027s in [a, b]\u003cbr\u003eOutput operations:\u003cbr\u003e3 a b output the number of \u00271\u0027s in [a, b]\u003cbr\u003e4 a b output the length of the longest continuous \u00271\u0027 string in [a , b]\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"T(T\u0026lt;\u003d10) in the first line is the case number.\u003cbr\u003eEach case has two integers in the first line: n and m (1 \u0026lt;\u003d n , m \u0026lt;\u003d 100000).\u003cbr\u003eThe next line contains n characters, \u00270\u0027 or \u00271\u0027 separated by spaces.\u003cbr\u003eThen m lines are the operations:\u003cbr\u003eop a b: 0 \u0026lt;\u003d op \u0026lt;\u003d 4 , 0 \u0026lt;\u003d a \u0026lt;\u003d b \u0026lt; n. "}},{"title":"Output","value":{"format":"HTML","content":"For each output operation , output the result."}},{"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\u003e1\r\n10 10\r\n0 0 0 1 1 0 1 0 1 1\r\n1 0 2\r\n3 0 5\r\n2 2 2\r\n4 0 4\r\n0 3 6\r\n2 3 7\r\n4 2 8\r\n1 0 5\r\n0 5 6\r\n3 3 9\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e5\r\n2\r\n6\r\n5\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}