{"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\u003eMột mảng các số nguyên dương \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e1\u003c/sub\u003e, \u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e2\u003c/sub\u003e, ..., \u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003en\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e được cung cấp. Hãy xem xét một mảng con bất kỳ \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003el\u003c/i\u003e\u003c/sub\u003e, \u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003el\u003c/i\u003e + 1\u003c/sub\u003e..., \u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003er\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e, trong đó \u003cspan class\u003d\"tex-span\"\u003e1 ≤ \u003ci\u003el\u003c/i\u003e ≤ \u003ci\u003er\u003c/i\u003e ≤ \u003ci\u003en\u003c/i\u003e\u003c/span\u003e. Đối với mỗi số nguyên dương \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/span\u003e, ký hiệu bằng \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e số lần xuất hiện của \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/span\u003e trong mảng con. Chúng ta gọi là \u003cspan class\u003d\"tex-font-style-it\"\u003esức mạnh\u003c/span\u003e của mảng con là tổng của các tích \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/sub\u003e·\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/sub\u003e·\u003ci\u003es\u003c/i\u003e\u003c/span\u003e cho mỗi số nguyên dương \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003es\u003c/i\u003e\u003c/span\u003e. Tổng chỉ chứa một số hữu hạn các phần tử khác không vì số lượng giá trị khác nhau trong mảng thực sự là hữu hạn.\u003c/p\u003e\u003cp\u003eBạn nên tính toán sức mạnh của mảng con \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003et\u003c/i\u003e\u003c/span\u003e đã cho.\u003c/p\u003e"}},{"title":"Nhập","value":{"format":"HTML","content":"\u003cp\u003eDòng đầu tiên chứa hai số nguyên \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003en\u003c/i\u003e\u003c/span\u003e và \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003et\u003c/i\u003e\u003c/span\u003e (\u003cspan class\u003d\"tex-span\"\u003e1 ≤ \u003ci\u003en\u003c/i\u003e, \u003ci\u003et\u003c/i\u003e ≤ 200000\u003c/span\u003e) — độ dài của mảng và số lượng truy vấn tương ứng.\u003c/p\u003e\u003cp\u003eDòng thứ hai chứa \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003en\u003c/i\u003e\u003c/span\u003e số nguyên dương \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ei\u003c/i\u003e\u003c/sub\u003e\u003c/span\u003e (\u003cspan class\u003d\"tex-span\"\u003e1 ≤ \u003ci\u003ea\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e\u003ci\u003ei\u003c/i\u003e\u003c/sub\u003e ≤ 10\u003csup class\u003d\"upper-index\"\u003e6\u003c/sup\u003e\u003c/span\u003e) — các phần tử của mảng.\u003c/p\u003e\u003cp\u003eCác dòng tiếp theo chứa hai số nguyên dương \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003el\u003c/i\u003e\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003er\u003c/i\u003e\u003c/span\u003e (\u003cspan class\u003d\"tex-span\"\u003e1 ≤ \u003ci\u003el\u003c/i\u003e ≤ \u003ci\u003er\u003c/i\u003e ≤ \u003ci\u003en\u003c/i\u003e\u003c/span\u003e) mỗi số — chỉ số của đầu và cuối của mảng con tương ứng.\u003c/p\u003e"}},{"title":"Đầu ra","value":{"format":"HTML","content":"\u003cp\u003eXuất \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003et\u003c/i\u003e\u003c/span\u003e dòng, dòng thứ \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ei\u003c/i\u003e\u003c/span\u003e của đầu ra nên chứa một số nguyên dương duy nhất — sức mạnh của mảng con truy vấn thứ \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003ei\u003c/i\u003e\u003c/span\u003e.\u003c/p\u003e\u003cp\u003eXin vui lòng không sử dụng chỉ mục \u003cspan class\u003d\"tex-font-style-tt\"\u003e%lld\u003c/span\u003e để đọc hoặc viết số nguyên 64-bit trong C++. Nên sử dụng luồng \u003cspan class\u003d\"tex-font-style-tt\"\u003ecout\u003c/span\u003e (bạn cũng có thể sử dụng \u003cspan class\u003d\"tex-font-style-tt\"\u003e%I64d\u003c/span\u003e).\u003c/p\u003e"}},{"title":"Ví dụ","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 2\n1 2 1\n1 2\n1 3\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e3\n6\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}},{"title":"","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\u003e8 3\n1 1 2 2 1 3 1 1\n2 7\n1 6\n2 7\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e20\n20\n20\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\u003eXem xét mảng sau (xem ví dụ thứ hai) và mảng con [2, 7] (các phần tử của mảng con được tô màu): \u003c/p\u003e\u003ccenter\u003e\u003cimg class\u003d\"tex-graphics\" src\u003d\"CDN_BASE_URL/07d99526d82abfa4e094b1ccc1c6f7e8?v\u003d1714794080\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e\u003c/center\u003e Sau đó \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e1\u003c/sub\u003e \u003d 3\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e2\u003c/sub\u003e \u003d 2\u003c/span\u003e, \u003cspan class\u003d\"tex-span\"\u003e\u003ci\u003eK\u003c/i\u003e\u003csub class\u003d\"lower-index\"\u003e3\u003c/sub\u003e \u003d 1\u003c/span\u003e, vì vậy sức mạnh bằng \u003cspan class\u003d\"tex-span\"\u003e3\u003csup class\u003d\"upper-index\"\u003e2\u003c/sup\u003e·1 + 2\u003csup class\u003d\"upper-index\"\u003e2\u003c/sup\u003e·2 + 1\u003csup class\u003d\"upper-index\"\u003e2\u003c/sup\u003e·3 \u003d 20\u003c/span\u003e."}}]}