{"trustable":false,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\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 type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"先输入一个 t(1≤t≤100),代表t组样例,接下来t行每行输入一个n and k(1≤n≤1e18,,2≤k≤1e18)\n需要你一步一步的把当前的n变成0,每步能进行一下操作:\u003cp\u003e\n1、当前数减一\u003cp\u003e\n2、如果当前数能够整除k,就可以除k\u003cp\u003e\n问你最少需要多少步把n变成0\u003cp\u003e\n比如n \u003d 27 , k \u003d 3\u003cp\u003e\n我可以 27 -\u003e 26 -\u003e 25 -\u003e 24 -\u003e 8 -\u003e 7 -\u003e 6 -\u003e 2 -\u003e 1 -\u003e 0\n"}},{"title":"Input","value":{"format":"HTML","content":"一个整数t代表有t组样例\u003cp\u003e\n接下来每行一个n和k (1\u003c\u003dn\u003c\u003d1e18,2\u003c\u003dk\u003c\u003d1e18)\n"}},{"title":"Output","value":{"format":"HTML","content":"把n变为0的最少步数"}},{"title":"Example","value":{"format":"HTML","content":"\u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e2\n59 3\n1000000000000000000 10\n\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e8\n19\n\u003c/pre\u003e\n \u003c/div\u003e\n\u003c/div\u003e"}},{"title":"Note","value":{"format":"HTML","content":"第一个样例:59-\u003e58-\u003e57-\u003e19-\u003e18-\u003e6-\u003e2-\u003e1-\u003e0;\n\u003cp\u003e第二个样例:n连续18次除以k,变成1,然后1-\u003e0\u003c/p\u003e"}}]}