{"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":"MD","content":"求max( (a[i] + a[j]) xor a[k] ) (i, j, k互不相同)\n"}},{"title":"Input","value":{"format":"MD","content":"第一行给出T代表数据组数,对于每一组数据第一行给出n代表数组中数的数量,第二行给出n个数分别代表a中第i的元素\n1≤T≤1000\n3≤n≤1000\n0≤ai≤1e9\n且n\u003e100的数据最多只有10组\n"}},{"title":"Output","value":{"format":"MD","content":"对于每一组数据,输出答案,每组数据占一行。\n"}},{"title":"Sample Input","value":{"format":"MD","content":"2\n3\n1 2 3\n3\n100 200 300"}},{"title":"Sample Output","value":{"format":"MD","content":"6\n400"}}]}