{"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":"\u003cp\u003e\n\t\u0026nbsp;\u003c/p\u003e\n\u003cdiv class\u003d\"panel_content\"\u003e\n\t\u003cspan data-scayt_word\u003d\"老师给小明布置了作业,求实数的绝对值,不过小明觉得太easy了,就叫给你处理了\" data-scaytid\u003d\"17\"\u003e老师给小明布置了作业,求实数的绝对值,不过小明觉得太难了,就叫给你处理了\u003c/span\u003e \u003c/div\u003e\n\u003cdiv class\u003d\"panel_bottom\"\u003e\n\t\u0026nbsp;\u003c/div\u003e\n\u003cbr /\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cdiv class\u003d\"panel_content\"\u003e\n\t\u003cspan data-scayt_word\u003d\"输入数据有多组,每组占一行,每行包含一个实数。\" data-scaytid\u003d\"2\"\u003e输入数据有多组,每组占一行,每行包含一个实数。\u003c/span\u003e\u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cdiv class\u003d\"panel_content\"\u003e\n\t\u003cspan data-scayt_word\u003d\"对于每组输入数据,输出它的绝对值,要求每组数据输出一行,结果保留两位小数。\" data-scaytid\u003d\"3\"\u003e对于每组输入数据,输出它的绝对值,要求每组数据输出一行,结果保留两位小数。\u003c/span\u003e\u003c/div\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cp\u003e123\u003c/p\u003e\n\u003cp\u003e-234.00\u003c/p\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cp\u003e123.00\u003c/p\u003e\n\u003cp\u003e234.00\u003c/p\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003cp\u003e由于精度问题,本题请使用double类型\u003c/p\u003e\n\u003cp\u003e关于多组输入,可以使用\u003c/p\u003e\n\u003cp\u003ewhile(cin\u003e\u003ex){代码}\u003c/p\u003e\n\u003cp\u003e或者\u003c/p\u003e\n\u003cp\u003ewhile(scanf(\"%lf\", \u0026x) !\u003d EOF){代码}\u003c/p\u003e"}}]}