{"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":"Acboy这个学期有N门课程,他计划最多花M天学习。当然,他将从不同的课程中获得的利润取决于他花在这门课程上的天数。如何安排M天学习N门课程,以使利润最大化?"}},{"title":"Input","value":{"format":"HTML","content":"输入由多组数据组成。一组数据以包含两个正整数n和m的一行开始,n是课程数,m是ACboy拥有的天数,接下来输入一个矩阵a[i][j],a[i][j]表示ACboy如果在第i门课程上花费j天,他将获得值a[i][j]的利润。(1\u003c\u003di\u003c\u003dN\u003c\u003d100,1\u003c\u003dj\u003c\u003dM\u003c\u003d100)输入以n\u003d0,m\u003d0结束。"}},{"title":"Output","value":{"format":"HTML","content":"对于每组数据,程序应该输出一行,为ACboy将获得的最大利润数。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e\n2 2\n1 2\n1 3\n2 2\n2 1\n2 1\n2 3\n3 2 1\n3 2 1\n0 0\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e\n3\n4\n6\u003c/pre\u003e"}}]}