{"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":"\u003cp\u003e有n个奶牛分别有对应的兴趣值,现在对奶牛分组,每组成员不少于t, \u003c/p\u003e\n\n\u003cp\u003e在每组中所有的成员兴趣值要减少到该组的最小值,问总共最少需要减少的兴趣值是多少。\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003e多组数据。\u003c/p\u003e\n\n\u003cp\u003e每组数据第一行是n和t。\u003c/p\u003e\n\n\u003cp\u003e接下来n个数,第i个数是第i头奶牛的兴趣值。\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"每组数据一行,为总共最少需要减少的兴趣值。"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e7 3\n8 5 6 2 1 7 6\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e8\u003c/pre\u003e"}}]}