{"trustable":false,"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":"\u003cscript type\u003d\u0027text/x-mathjax-config\u0027\u003eMathJax.Hub.Config({tex2jax: { inlineMath: [[\u0027$\u0027,\u0027$\u0027]] } }); \u003c/script\u003e\n\u003cscript type\u003d\u0027text/javascript\u0027 src\u003d\u0027https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\u0027\u003e\u003c/script\u003e\n\u003cscript type\u003d\u0027text/javascript\u0027\u003esetTimeout(function(){MathJax.Hub.Queue([\u0027Typeset\u0027, MathJax.Hub, \u0027left_view\u0027]);}, 2000);\u003c/script\u003e\n\u003cdiv class\u003d\"panel_content\"\u003e\n 小C特别讨厌RMB玩家,在他做了游戏设计师之后他设计出了一款氪金也没用的游戏,从i级升级到i+1级会花费c,但是只有p/q的概率成功升级,如果升级失败则会掉到x级现在小C想知道玩家从l级升到r级所需的花费。\n \u003cbr\u003e \n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"t组输入,每组输入第一行包含两个数n(1≤n≤500 000),m(1≤q≤500 000),接下来n行,每行4个整数pi,qi,xi,ci(1≤pi≤qi≤1e9, 1≤xi≤i, 0≤ci≤1e9),接下来m行,表示m次查询,每次查询给出两个整数l和r (1≤l≤n+1).(1≤r≤n+1). (l≤r)."}},{"title":"Output","value":{"format":"HTML","content":"对于每个查询,以分数形式输出答案模1e9 + 7,也就是说,如果答案是P/Q你应该输出P*Q的逆元模1e9 + 7。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e1\n3 2\n1 1 1 2\n1 2 1 3\n1 3 3 4\n1 4\n3 4\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e22\n12\n\n\n \n \u003ci style\u003d\"font-size:1px\"\u003e \u003c/i\u003e\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003cpre\u003e\nHuge IO (Over 40MB)! IO optimization is preferred.\n\n \n \u003c/pre\u003e"}}]}