{"trustable":false,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n disable: true\n };\n\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 type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\" /\u003e\n","sections":[{"title":"","value":{"format":"MD","content":"蓝桥选拔赛终于开始了,话不多说A题吧。\n从前从前有一个正整数n,你需要找到一个素数x和一个合数y使x+y\u003dn成立,这样就可以双剑合并了。\n素数是一个大于1的自然数,它的因数只有1与它自己本身。非素数且大于1的自然数称为合数。当然,1不是素数也不是合数。"}},{"title":"Input","value":{"format":"MD","content":"输入包含多个样例。输入的第一行包含一个整数T (1≤T≤10^5),样例数目。\n\n对于每个样例,输入的每一行都包含一个整数n (1≤n≤10^9)."}},{"title":"Output","value":{"format":"MD","content":"对于每一种情况,打印两个整数。x和y中1≤x,y\u003cn。\n如果有多个有效答案,随便您打印任何一个。如果没有有效答案,则打印整数−1。"}},{"title":"Example","value":{"format":"MD","content":"\u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e3\n4\n6\n7\n\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e-1\n2 4\n3 4\n\u003c/pre\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}}]}