{"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":"\nHUTACM最近在招新,学长学姐们在给新生出题目,但是新生们太聪明了,学长们绞尽脑汁终于想出了一些计算题,你能算出答案吗?输入一行表达式,只包括\u0027+\u0027, \u0027-\u0027, \u0027*\u0027, \u0027/\u0027和数字。\n \u003cbr\u003e \n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"多组输入,每个样例占一行,每行字符不超过两百,如果表达式只有一个0则停止输入。"}},{"title":"Output","value":{"format":"HTML","content":"对于每个样例,在一行输出表达式的值,保留小数点后两位。 \n\u003cbr\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e1 + 1\n5 + 8 / 3 - 6 + 2 * 1\n0\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e2.00\n3.67\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003c/h4\u003e \n \u003cimg SRC\u003d\"CDN_BASE_URL/943902017c4a5417480565b112246dae?v\u003d1541414805\"\u003e \n \u003cstyle type\u003d\"text/css\"\u003e\n#problem-table \u003e thead \u003e tr \u003e th, #problem-table \u003e tbody \u003e tr \u003e td\n{\n padding: 3px 5px;\n border: 1px solid black;\n}\n\u003c/style\u003e "}}]}