{"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":"\u003cdiv\u003e \n \u003cdiv\u003e \n \u003cspan\u003e\u003cspan\u003e\u003cspan\u003e我们定义斐波那契数列如下:\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\n \u003c/div\u003e \n \u003cdiv\u003e \n \u003cspan\u003e\u003cspan\u003e\u003cspan\u003ef1\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003d1\n \u003c/div\u003e \n \u003cdiv\u003e \n \u003cspan\u003e\u003cspan\u003e\u003cspan\u003ef2\u003c/span\u003e\u003c/span\u003e\u003c/span\u003e\u003d2\n \u003c/div\u003e \n \u003cdiv\u003e\n f(n)\u003df(n-1)+f(n-2)(n\u0026gt;\u003d3)\n \u003c/div\u003e \n \u003cdiv\u003e\n \u0026nbsp;\n \u003c/div\u003e \n \u003cdiv\u003e\n 现在,给定两个数a和b,计算有多少个斐波那契数列中的数在a和b之间(包含边界)。\n \u003c/div\u003e \n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cdiv\u003e\n 输入包含多组测试数据,每组测试数据都是两个非负整数a和b,当a和b都等于0时,程序结束。0\u0026lt;\u003da\u0026lt;\u003db\u0026lt;\u003d10^100,注意a和b都不会出现前导0的情况(即首位为0)。\n\u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003e 输出在a和b之间(满足a\u0026lt;\u003df(i)\u0026lt;\u003db)\u003cspan\u003e\u003cspan\u003e数的数量。\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cdiv\u003e \n \u003cdiv\u003e\n 10 100\n \u003c/div\u003e \n \u003cdiv\u003e\n 1234567890 9876543210\n \u003c/div\u003e \n \u003cdiv\u003e\n 0 0\u0026nbsp;\n \u003c/div\u003e \n\u003c/div\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cdiv\u003e \n \u003cdiv\u003e\n 5\n \u003c/div\u003e \n \u003cdiv\u003e \n \u003cdiv\u003e\n 4\u0026nbsp;\n \u003c/div\u003e \n \u003c/div\u003e \n\u003c/div\u003e"}}]}