C. Permute Digits You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number not exceeding b. No number in input and/or output can start with the digit 0. It is allowed to leave a as it i…

http://codeforces.com/contest/915/problem/C 这题麻烦在前导0可以直接删除,比如 1001 100 应该输出11就好 我的做法是用dfs,每一位每一位的比较.在dfs的时候用一个char *指针指着b需要比较的位置,这样做方便很多. 2018年1月20日 16:35:51 身体好差,代码也很多不会写了.退役得真快. bigger需要在新的一行里面弄,因为函数传参的时候不确定是哪个先,哪个后的.再正规点,不要一行写两次,带有++, --的东西 也就是不要…

题目链接:Permute Digits 题意: 给出了两个数字a,b(<=1e18),保证a,b都不带前缀0.用a的字符重组一个数字使这个值最大且小于b.(保证这个值存在) 题解: 这题遇到了不止一遍了,但是每次都会写错-所以感觉很有必要写下来.看到这题,我的第一想法是贪心每次都取最大的.但是这样其实存在很大的漏洞,因为字符个数是有限的如果小的数被取完了大的数填充进去也不符合条件.这题要按DFS的思路去做才行.这里给出按贪心的做法的一组错误数据. a: 123456789123456789 b:…

C. Permute Digits time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number n…

You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number not exceeding b. No number in input and/or output can start with the digit 0. It is allowed to leave a as it is. Input The first…

http://poj.org/problem?id=3373 Changing Digits Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 2719   Accepted: 863 Description Given two positive integers n and k, you are asked to generate a new integer, say m, by changing some (maybe…

You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number not exceeding b. No number in input and/or output can start with the digit 0. It is allowed to leave a as it is. Input The first…

You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number not exceeding b. No number in input and/or output can start with the digit 0. It is allowed to leave a as it is. Input The first…

You are given two positive integer numbers a and b. Permute (change order) of the digits of a to construct maximal number not exceeding b. No number in input and/or output can start with the digit 0. It is allowed to leave a as it is. Input The first…

Preparing Olympiad time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You have n problems. You have estimated the difficulty of the i-th one as integer ci. Now you want to prepare a problemse…