{"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小鱼在电脑上玩回合制游戏,小鱼作为游戏先手。游戏规则:游戏开始时有n本书,每轮玩家可以取走不超过m本书。换句话说每次可以选一个数x(x\u003c\u003dm),使得数字n \u003d n - x。当书被取完时,操作者获胜。现在给你一个n,一个m。问小鱼赢还是电脑赢(假设小鱼和电脑都极顶聪明)\n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"输入数据首先包含一个正整数C(C\u0026lt;\u003d100),表示有C组测试数据。\n\u003cbr\u003e每组测试数据占一行,包含两个整数n和m(1\u0026lt;\u003dn,m\u0026lt;\u003d1000),n和m的含义见题目描述。\n\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":"如果小鱼能赢,请输出“first”,否则请输出“second”,每个实例的输出占一行。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e2\n23 2\n4 3\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003efirst\nsecond\u003c/pre\u003e"}}]}