{"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\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$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"MD","content":"OHgg 有一个数组$b_{1}, b_{2}, \\ldots, b_{n+2}$ ,根据以下操作得到:\n\n- 它由数组$a$生成\n- $a_{1}, a_{2}, \\ldots, a_{n}$ 组成 $b$ 的前 $n$ 个数\n- $b_{n+1}$ 是$a_{1}, a_{2}, \\ldots, a_{n}$的和\n- $b_{n+2}$是任意的 $x$,$1\\le x\\le10^9$\n\n例如:$b\u003d[2,3,7,12,2]$\n\n$a$ 可以是:\n\u003cul\u003e \n \u003cli\u003e $$$a\u003d[2, 2, 3]$$$ 并且 $$$x\u003d12$$$; \u003c/li\u003e\n \u003cli\u003e $$$a\u003d[3, 2, 7]$$$ 并且 $$$x\u003d2$$$. \u003c/li\u003e\n\u003c/ul\u003e"}},{"title":"Input","value":{"format":"MD","content":"第一行包含一个整数 $t$ $(1\\le t\\le 10^4)$然后是t测试用例。\n\n每个测试用例第一行包含单个整数 $n$ ($1\\le n\\le 2\\times10^5$)\n\n每个测试用例的第二行包含 $n+2$ 个整数$b_{1}, b_{2}, \\ldots, b_{n+2}$, $1\\le b_{i}\\le 10^9$ \n\n保证所有样例的n之和不超过$2\\times10^5$\n"}},{"title":"Output","value":{"format":"MD","content":"对每个测试样例,输出:\n\n- $n$ 个整数 $a_{1}, a_{2}, \\ldots, a_{n}$ \n- “-1”,如果找不到任何数组 $a$\n\n如果有多个数组 $a$ ,输出任意一个。"}},{"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\u003e4\n3\n2 3 7 12 2\n4\n9 1 7 1 6 5\n5\n18 2 2 3 2 9 2\n3\n2 6 9 2 1\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\u003e2 3 7 \n-1\n2 2 2 3 9 \n1 2 6 \n\u003c/pre\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}}]}