{"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":"PLAIN","content":"在一个有魔法的世界里,每个孩子都会魔法,老师今天布置的作业是把石头变成猪。\n在那个世界里每个符号代表一种东西,例如,b代表石头,m代表猪。\n用只有小写字母的字符串表示魔法\n比如\n一个魔法abcde会使a变为e\n魔法cdas会使c变s\n也就是每一个魔法,会使首字母代表的东西变成尾字母代表的东西"}},{"title":"Input","value":{"format":"PLAIN","content":"输入你会的魔法,每行一个,以0结束\n有多组输入数据"}},{"title":"Output","value":{"format":"PLAIN","content":"如果你能做完作业,就输出\"Yes.\",否则就输出\"No.\"(不要忽略了句号) \n作业的内容是把: b(代表石头)变成m(猪)\n对于每组输入数据,每个输出一行"}},{"title":"Sample Input","value":{"format":"PLAIN","content":"so\nsoon\nriver\ngoes\nthem\ngot\nmoon\nbegin\nbig\n0"}},{"title":"Sample Output","value":{"format":"PLAIN","content":"Yes.\n"}},{"title":"Hint","value":{"format":"PLAIN","content":"\n你可以通过\"big-got-them\"把石头变成猪"}}]}