{"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\"\u003eGiven a string S. K-string is the sub-string of S and it appear in the S at least K times.It means there are at least K different pairs (i,j) so that S\u003csub\u003ei\u003c/sub\u003e,S\u003csub\u003ei+1\u003c/sub\u003e... S\u003csub\u003ej\u003c/sub\u003e equal to this K-string. Given m operator or query:1.add a letter to the end of S; 2.query how many different K-string currently.For each query ,count the number of different K-string currently.\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"The input consists of multiple test cases. \u003cbr\u003eEach test case begins with a line containing three integers n, m and K(1\u0026lt;\u003dn,K\u0026lt;\u003d50000,1\u0026lt;\u003dm\u0026lt;\u003d200000), denoting the length of string S, the number of operator or question and the least number of occurrences of K-string in the S.\u003cbr\u003eThe second line consists string S,which only contains lowercase letters. \u003cbr\u003eThe next m lines describe the operator or query.The description of the operator looks as two space-separated integers t c (t \u003d 1; c is lowercase letter).The description of the query looks as one integer t (t \u003d 2). "}},{"title":"Output","value":{"format":"HTML","content":"For each query print an integer — the number of different K-string currently."}},{"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 5 2\r\nabc\r\n2\r\n1 a\r\n2\r\n1 a\r\n2\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e0\r\n1\r\n1\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}