{"trustable":true,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n section pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n {left: \u0027\\\\[\u0027, right: \u0027\\\\]\u0027, display: true}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"Bài toán","value":{"format":"HTML","content":"\u003csection\u003e\n\u003cp\u003eCho một dãy số \u003cvar\u003e\\(A\\)\u003c/var\u003e. Tìm số cách chia \u003cvar\u003e\\(A\\)\u003c/var\u003e thành một số dãy con liên tục không rỗng sao cho thỏa điều kiện sau:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eĐối với mỗi \u003cvar\u003e\\(i\\ (1 \\leq i \\leq k)\\)\u003c/var\u003e, tổng các phần tử trong \u003cvar\u003e\\(B_i\\)\u003c/var\u003e phải chia hết cho \u003cvar\u003e\\(i\\)\u003c/var\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eVì số cách chia có thể rất lớn, in kết quả dưới dạng modulo \u003cvar\u003e\\((10^9+7)\\)\u003c/var\u003e.\u003c/p\u003e\n\u003c/section\u003e"}},{"title":"Điều kiện","value":{"format":"HTML","content":"\u003csection\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cvar\u003e\\(1 \\leq N \\leq 3000\\)\u003c/var\u003e\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\(1 \\leq A_i \\leq 10^{15}\\)\u003c/var\u003e\u003c/li\u003e\n\u003cli\u003eTất cả các giá trị trong input đều là số nguyên.\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/section\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003csection\u003e\n\u003cp\u003eInput được cung cấp từ Standard Input theo định dạng sau:\u003c/p\u003e\n\u003cpre\u003e\u003cvar\u003e\\(N\\)\u003c/var\u003e\r\n\u003cvar\u003e\\(A_1\\)\u003c/var\u003e \u003cvar\u003e\\(A_2\\)\u003c/var\u003e \u003cvar\u003e\\(\\ldots\\)\u003c/var\u003e \u003cvar\u003e\\(A_N\\)\u003c/var\u003e\r\n\u003c/pre\u003e\n\u003c/section\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003csection\u003e\n\u003cp\u003eIn số cách chia dãy sao cho thỏa điều kiện trong Bài toán, modulo \u003cvar\u003e\\((10^9+7)\\)\u003c/var\u003e.\u003c/p\u003e\n\u003c/section\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\u003e4\r\n1 2 3 4\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e3\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\r\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\n\u003cp\u003eChúng ta có ba cách chia dãy, như sau:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cvar\u003e\\((1),(2),(3),(4)\\)\u003c/var\u003e\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\((1,2,3),(4)\\)\u003c/var\u003e\u003c/li\u003e\n\u003cli\u003e\u003cvar\u003e\\((1,2,3,4)\\)\u003c/var\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/section\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\u003e5\r\n8 6 3 3 3\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e5\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\r\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\n\u003c/section\u003e"}},{"title":"Ví dụ 3","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\u003e10\r\n791754273866483 706434917156797 714489398264550 918142301070506 559125109706263 694445720452148 648739025948445 869006293795825 718343486637033 934236559762733\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e15\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\r\n\u003csection\u003e\n\n\u003c/section\u003e\n\n\u003csection\u003e\n\n\u003cp\u003eCác giá trị trong input có thể không phù hợp với kiểu số nguyên \u003cvar\u003e\\(32\\)\u003c/var\u003e-bit.\u003c/p\u003e\u003c/section\u003e"}}]}