{"trustable":true,"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":"\u003cdiv class\u003d\"panel_content\"\u003e给定一个序列1,2,3,......N,你的任务是计算所有可能的子序列,使得子序列的和为M。\u003c/div\u003e"}},{"title":"输入","value":{"format":"HTML","content":"输入包含多个测试用例。每个测试用例包含两个整数N,M(1 \u003c\u003d N, M \u003c\u003d 1000000000)。输入以N \u003d M \u003d 0结束。\u003cbr\u003e"}},{"title":"输出","value":{"format":"HTML","content":"对于每个测试用例,打印所有可能的子序列,使其和为M。格式如下所示。每个测试用例后打印一个空行。\u003cbr\u003e"}},{"title":"样例","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e20 10\r\n50 30\r\n0 0\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e[1,4]\r\n[10,10]\r\n\r\n[4,8]\r\n[6,9]\r\n[9,11]\r\n[30,30]\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}}]}