{"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":"HTML","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给定一个包含N(N\u0026lt;\u003d3000)个正整数的序列,每个数不超过5000,对它们两两相加得到的N*(N-1)/2个和,求出其中前M大的数(M\u0026lt;\u003d1000)并按从大到小的顺序排列。 \n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"输入可能包含多组数据,其中每组数据包括两行: \n\u003cbr\u003e第一行两个数N和M, \n\u003cbr\u003e第二行N个数,表示该序列。 \n\u003cbr\u003e \n\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":"对于输入的每组数据,输出M个数,表示结果。输出应当按照从大到小的顺序排列。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e4 4\n1 2 3 4\n4 5\n5 3 6 4\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e7 6 5 5\n11 10 9 9 8\u003c/pre\u003e"}}]}