{"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":"MD","content":"给你1到n,n个数字。\n1和2相邻,2和3相邻,3和4相邻,...,n和1相邻(形成一个圈)\n\n两个人博弈\n每个人可以拿走长为1到k个的连续的数字。\n拿走最后一个数字的人获胜\n二人轮流操作\n\n注意:\n假如 1 到 10 个数字 k 为3\n你可以拿走 10 1 2 因为他们连续\n但是如果 2 被拿走了,就不可以拿走1 3 4。因为1和3是不连续的"}},{"title":"Input","value":{"format":"MD","content":"\n第一行输入一个整数T,代表有t组测试样例。\n下面T行每行格式为:\nn k\n变量含义如上\n(1\u0026lt;\u003dT\u0026lt;\u003d100)\n$3\\le n\\le10^9,1\\le k\\le10$"}},{"title":"Output","value":{"format":"MD","content":"每个测试用例输出一行\n如果先手赢输出 first\n后手赢输出 second\n具体见样例"}},{"title":"Sample Input","value":{"format":"MD","content":"\u003cpre\u003e2\n1 1\n3 2\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"MD","content":"\u003cpre\u003eCase 1: first\nCase 2: second\u003c/pre\u003e"}}]}