{"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":"N个人排队,有M个关系。\n每个关系两个人,a b。 表示a必须排在b前。\n若a 和 b谁在前面都行,那么就让编号小的尽量靠前。"}},{"title":"Input","value":{"format":"MD","content":"T组数据**(1 \u003c\u003d T \u003c\u003d 5)**\n然后对于每个测试数据,第一行有两个整数n**(1 \u003c\u003d n \u003c\u003d 30000)**和m**(1 \u003c\u003d m \u003c\u003d 100000)**,分别表示人数和关系个数。"}},{"title":"Output","value":{"format":"MD","content":"对每个测试数据,输出一行排队的顺序,用空格隔开。"}},{"title":"Sample Input","value":{"format":"MD","content":"1\n5 10\n3 5\n1 4\n2 5\n1 2\n3 4\n1 4\n2 3\n1 5\n3 5\n1 2"}},{"title":"Sample Output","value":{"format":"MD","content":"1 2 3 4 5"}}]}