{"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":"Description","value":{"format":"MD","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 把一个偶数拆成两个不同素数的和,有几种拆法呢? \n\u003c/div\u003e"}},{"title":"Input","value":{"format":"MD","content":"输入包含一些正的偶数,其值不会超过10000,个数不会超过500,若遇0,则结束。"}},{"title":"Output","value":{"format":"MD","content":"对应每个偶数,输出其拆成不同素数的个数,每个结果占一行。"}},{"title":"Sample Input","value":{"format":"MD","content":"\u003cpre\u003e30\n26\n0\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"MD","content":"\u003cpre\u003e3\n2\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"MD","content":"多组输入参考:\n```cpp\nwhile(scanf(\"%d\", \u0026n) ) {\n if(n \u003d\u003d 0) break;\n 请注意清空;\n}\n```"}}]}