{"trustable":false,"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":"\u003cdiv\u003e\n \u003cp\u003e恶魔小嘉然这下终于狠不下心了,变成了天使嘉然(相对于前面的题),放了一个处理合格括号序列的问题。\u003c/p\u003e\n \u003cp\u003e应当提醒您,如果将 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e+\u003c/span\u003e» 和 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e1\u003c/span\u003e» 插入到一个括号序列中,能够得到正确的数学表达式,则该括号序列被称之为合格。例如序列 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(())()\u003c/span\u003e», «\u003cspan class\u003d\"tex-font-style-tt\"\u003e()\u003c/span\u003e» 和 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(()(()))\u003c/span\u003e» 是合格的,然而 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e)(\u003c/span\u003e», «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(()\u003c/span\u003e» 和 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(()))(\u003c/span\u003e» 是不合格的。\u003c/p\u003e\n \u003cp\u003e给定一个由字符 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(\u003c/span\u003e» 和 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e)\u003c/span\u003e» 组成的字符串。您需要找出它的最长子串,且该子串是一个合格的括号序列。同时,还需要找出这样的子串的数目。\u003c/p\u003e\n\u003c/div\u003e"}},{"title":"输入","value":{"format":"HTML","content":"\u003cdiv class\u003d\"input-specification\"\u003e\n \u003cdiv class\u003d\"section-title\"/div\u003e\n \u003cp\u003e输入文件的第一行包含了一个非空的字符串,由 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e(\u003c/span\u003e» 和 «\u003cspan class\u003d\"tex-font-style-tt\"\u003e)\u003c/span\u003e» 字符组成。它的长度不超过 \u003cspan class\u003d\"tex-span\"\u003e10\u003csup class\u003d\"upper-index\"\u003e6\u003c/sup\u003e\u003c/span\u003e 。\u003c/p\u003e\n\u003c/div\u003e"}},{"title":"输出","value":{"format":"HTML","content":"\u003cdiv class\u003d\"output-specification\"\u003e\n \u003cdiv class\u003d\"section-title\"/div\u003e\n \u003cp\u003e打印最长子串 (它是合格的括号序列) 的长度,以及这样的子串的数目。如果不存在这样的子串,只需写出包含 \"\u003cspan class\u003d\"tex-font-style-tt\"\u003e0 1\u003c/span\u003e\" 的一行即可。\u003c/p\u003e\n\u003c/div\u003e"}},{"title":"示例","value":{"format":"HTML","content":"\u003cstyle type\u003d\u0027text/css\u0027\u003e .input, .output {border: 1px solid #888888;} .output {margin-bottom:1em;position:relative;top:-1px;} .output pre,.input pre {background-color:#EFEFEF;line-height:1.25em;margin:0;padding:0.25em;} .title {background-color:#FFFFFF;border-bottom: 1px solid #888888;font-family:arial;font-weight:bold;padding:0.25em;} \u003c/style\u003e\u003cdiv class\u003d\"sample-tests\"\u003e\n \u003cdiv class\u003d\"section-title\"/div\u003e\n \u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n \u003cstrong\u003e输入\u003c/strong\u003e\n \u003c/div\u003e\n \u003cpre\u003e)((())))(()())\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n \u003cstrong\u003e输出\u003c/strong\u003e\n \u003c/div\u003e\n \u003cpre\u003e6 2\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n \u003cstrong\u003e输入\u003c/strong\u003e\n \u003c/div\u003e\n \u003cpre\u003e))(\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n \u003cstrong\u003e输出\u003c/strong\u003e\n \u003c/div\u003e\n \u003cpre\u003e0 1\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}}]}