{"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\u003e\"QAQ\" là một từ dùng để biểu thị cảm xúc khóc. Hãy tưởng tượng \"Q\" như là mắt có nước mắt và \"A\" như là miệng.\u003c/p\u003e\u003cp\u003eBây giờ Diamond đã cho Bort một chuỗi chỉ gồm các chữ cái tiếng Anh in hoa có độ dài là \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003en\u003c/i\u003e\u003c/span\u003e. Trong chuỗi có một số lượng lớn các chuỗi con \"QAQ\" (Diamond thật dễ thương!).\u003c/p\u003e\u003ccenter\u003e \u003cimg class\u003d\"tex-graphics\" height\u003d\"259px\" src\u003d\"CDN_BASE_URL/31d685c32dbc614f3f8e1cbdff11eb08?v\u003d1707667908\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\" width\u003d\"341px\"\u003e \u003cspan class\u003d\"tex-font-size-tiny\"\u003eminh họa bởi 猫屋 https://twitter.com/nekoyaliu\u003c/span\u003e \u003c/center\u003e\u003cp\u003eBort muốn biết có bao nhiêu chuỗi con \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eQAQ\u003c/span\u003e\" trong chuỗi mà Diamond đã cho. Lưu ý rằng các chữ \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eQAQ\u003c/span\u003e\" không cần phải liên tiếp nhau, nhưng thứ tự các chữ phải chính xác.\u003c/p\u003e"}},{"title":"Nhập","value":{"format":"HTML","content":"\u003cp\u003eDòng duy nhất chứa một chuỗi có độ dài là \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003en\u003c/i\u003e\u003c/span\u003e (\u003cspan class\u003d\"tex-span\"\u003e1 ≤ \u003ci\u003en\u003c/i\u003e ≤ 100\u003c/span\u003e). Đảm bảo rằng chuỗi chỉ chứa các chữ cái tiếng Anh in hoa.\u003c/p\u003e"}},{"title":"Đầu ra","value":{"format":"HTML","content":"\u003cp\u003eIn ra một số nguyên duy nhất — số lượng chuỗi con \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eQAQ\u003c/span\u003e\" trong chuỗi.\u003c/p\u003e"}},{"title":"Ví dụ 1","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\u003eQAQAQYSYIOIWIN\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e4\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}},{"title":"Ví dụ 2","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\u003eQAQQQZZYNOIWIN\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e3\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}},{"title":"Ghi chú","value":{"format":"HTML","content":"\u003cp\u003eTrong ví dụ đầu tiên có \u003cspan class\u003d\"tex-span\"\u003e4\u003c/span\u003e chuỗi con \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eQAQ\u003c/span\u003e\": \"\u003cspan class\u003d\"tex-font-style-tt\"\u003e\u003cspan class\u003d\"tex-font-style-bf\"\u003eQAQ\u003c/span\u003eAQYSYIOIWIN\u003c/span\u003e\", \"\u003cspan class\u003d\"tex-font-style-tt\"\u003e\u003cspan class\u003d\"tex-font-style-bf\"\u003eQA\u003c/span\u003eQA\u003cspan class\u003d\"tex-font-style-bf\"\u003eQ\u003c/span\u003eYSYIOIWIN\u003c/span\u003e\", \"\u003cspan class\u003d\"tex-font-style-tt\"\u003e\u003cspan class\u003d\"tex-font-style-bf\"\u003eQ\u003c/span\u003eAQ\u003cspan class\u003d\"tex-font-style-bf\"\u003eAQ\u003c/span\u003eYSYIOIWIN\u003c/span\u003e\", \"\u003cspan class\u003d\"tex-font-style-tt\"\u003eQA\u003cspan class\u003d\"tex-font-style-bf\"\u003eQAQ\u003c/span\u003eYSYIOIWIN\u003c/span\u003e\".\u003c/p\u003e"}}]}