{"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":"MD","content":"给定两个正整数 a 和 b。对 a 的数字作出排列 (更改顺序),以构建一个不超过 b 的最大数。输入输出中的任何数,都不含前导数字 0。\n\n允许保持 a 的原样。"}},{"title":"输入","value":{"format":"MD","content":"第一行包含整数 a (1 ≤ a ≤ 10^18)。第二行包含整数 b (1 ≤ b ≤ 10^18)。两个整数均不含前导 0。保证有解。"}},{"title":"输出","value":{"format":"MD","content":"打印不超过 b 的最大数,此数是 a 的某个数字排列。答案不含前导 0。保证有解。\n\n输出的数,应当与 a 的长度相同,它应当是 a 的各数字的一个排列。"}},{"title":"示例","value":{"format":"MD","content":"输入\n123\n222\n输出\n213\n\n输入\n3921\n10000\n输出\n9321\n\n输入\n4940\n5000\n输出\n4940"}}]}