{"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":"题意简述","value":{"format":"MD","content":"给定长度为 $n$ 的数组 $a$。\n求 $\\max\\limits_{1\\le i \\le n}\\max\\limits_{1\\le j \\le n,i\\ne j}\\max\\limits_{1\\le k \\le n,i\\ne k,j\\ne k}( (a_i + a_j) ⊕ a_k )$\n"}},{"title":"输入格式","value":{"format":"MD","content":"第一行包含一个整数 $T$,表示数据组数。\n对于每组数据:\n- 第一行包含一个整数 $n$,表示 $a$ 数组的长度。\n- 第二行包含 $n$ 个整数,第 $i$ 个整数为 $a_i$。"}},{"title":"输出格式","value":{"format":"MD","content":"对于每一组数据,输出答案。\n每组数据的答案以换行隔开。"}},{"title":"输入样例","value":{"format":"MD","content":"2\n3\n1 2 3\n3\n100 200 300"}},{"title":"输出样例","value":{"format":"MD","content":"6\n400"}},{"title":"数据范围","value":{"format":"MD","content":"对于 $100\\%$ 的数据,$1≤T≤1000,3≤n≤1000,0≤a_i≤10^9$,且满足 $n\u003e100$ 的数据最多只有 $10$ 组"}}]}