hdu 1027

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（全排列）Ignatius and the Princess II -- HDU -- 1027

链接: http://acm.hdu.edu.cn/showproblem.php?pid=1027 Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5822 Accepted Submission(s): 3433 Problem Description Now our h…

HDU 1027 Ignatius and the Princess II（求第m个全排列）

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1027 Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10388 Accepted Submission(s): 5978 Problem Description Now our…

HDU 1027 G - Can you answer these queries?

http://acm.hdu.edu.cn/showproblem.php?pid=4027 Can you answer these queries? Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65768/65768 K (Java/Others)Total Submission(s): 14057 Accepted Submission(s): 3264 Problem Description A lot of ba…

HDU 1027 Ignatius and the Princess II（康托逆展开）

Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4865 Accepted Submission(s): 2929 Problem Description Now our hero finds the door to the BEelzebub feng5166. He o…

HDU 1027 Ignatius and the Princess II 选择序列题解

直接选择序列的方法解本题,可是最坏时间效率是O(n*n),故此不能达到0MS. 使用删除优化,那么就能够达到0MS了. 删除优化就是当须要删除数组中的元素为第一个元素的时候,那么就直接移动数组的头指针就能够了,那么时间效率就是O(1)了,而普通的删除那么时间效率是O(n),故此大大优化了程序. 怎样直接选择第k个序列,能够參考本博客的Leetcode题解.Leetcode题有个一模一样的题目.只是没有使用删除优化. 看见本题的讨论中基本上都是使用STL解,还有沾沾自喜的家伙,只是使用STL解决本…

HDU 1027 - Ignatius and the Princess II

第 m 大的 n 个数全排列 DFS可过 #include <iostream> using namespace std; int n,m; ]; bool flag; ]; void dfs(int x) { if(x>n){ m--; ; return ; } if(!flag){ ;i<=n;i++) { if(!vis[i]&& !flag) { vis[i]=; ans[x]=i; dfs(x+); vis[i]=; } } } } int main()…

HDU 1027(数字排列 STL)

题意是求 n 个数在全排列中的第 m 个序列. 直接用 stl 中的 next_permutation(a, a+n) (这个函数是求一段序列的下一个序列的) 代码如下: #include <bits/stdc++.h> using namespace std; ]; int main() { int n,m; while(~scanf("%d%d",&n,&m)) { ; i < n; ++i) a[i] = i+; while(--m) next_…

hdu 1027 输出第m个全排列（next_permutation）

Sample Input6 4 //输出第4个全排列11 8 Sample Output1 2 3 5 6 41 2 3 4 5 6 7 9 8 11 10 # include <cstdio> # include <iostream> # include <algorithm> using namespace std ; ] ; int main () { int n , m ; while (scanf("%d %d" , &n , &a…

HDU 1027 打印沙漏

https://pintia.cn/problem-sets/994805260223102976/problems/994805294251491328 本题要求你写个程序把给定的符号打印成沙漏的形状.例如给定17个“*”,要求按下列格式打印 ***** *** * *** ***** 所谓“沙漏形状”,是指每行输出奇数个符号:各行符号中心对齐:相邻两行符号数差2:符号数先从大到小顺序递减到1,再从小到大顺序递增:首尾符号数相等. 给定任意N个符号,不一定能正好组成一个沙漏.要求打印出的沙漏能…

HDU 1027 Ignatius and the Princess II 排列生成

解题报告:1-n这n个数,有n!中不同的排列,将这n!个数列按照字典序排序,输出第m个数列. 第一次TLE了,没注意到题目上的n和m的范围,n的范围是小于1000的,然后m的范围是小于10000的,很明显,如果暴力枚举的话,时间复杂度就是O(n*m),为10^7,所以可以通过.这题其实就是一个排列生成的题,排列生成有多种方法,这题的关键是当找到答案的时候,要及时退出暴力过程,要不然肯定TLE. #include<cstdio> #include<iostream> #include…

HDU - 1027 Ignatius and the Princess II 全排列

Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9380 Accepted Submission(s): 5481 Problem Description Now our hero finds the door to the BEelzebub feng5166. He o…

HDU 1027 Ignatius and the Princess II[DFS/全排列函数next_permutation]

Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 9458 Accepted Submission(s): 5532 Problem Description Now our hero finds the door to the BEelzebub feng5166. He op…

hdu 1027 Ignatius and the Princess II（产生第m大的排列，next_permutation函数）

题意:产生第m大的排列思路:使用 next_permutation函数(头文件algorithm) #include<iostream> #include<stdio.h> #include<algorithm> using namespace std; int main(){ ],n,m,i; while(~scanf("%d%d",&n,&m)){ ;i<=n;++i)a[i]=i; ;i<m;++i)next_pe…

#include<stdio.h> #include<algorithm> using namespace std; int a[1100]; int main() { int n,m,i; while(scanf("%d%d",&n,&m)!=EOF) { for(i=1;i<=n;i++) a[i]=i; for(i=1;i<m;i++) next_permutation(a+1,a+n+1); pri…

HDU 1027 以数列

Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4803 Accepted Submission(s): 2885 Problem Description Now our hero finds the door to the BEelzebub feng5166. He o…

hdu 1027 Ignatius and the Princess II（正、逆康托）

题意: 给N和M. 输出1,2,...,N的第M大全排列. 思路: 将M逆康托,求出a1,a2,...aN. 看代码. 代码: int const MAXM=10000; int fac[15]; int ans[1005]; int kk; int n,m; vector<int> pq; int main(){ int cn=0; fac[0]=1; while(1){ ++cn; fac[cn]=fac[cn-1]*cn; if(fac[cn]>MAXM){ --cn; break…

HDU题解索引

HDU 1000 A + B Problem I/O HDU 1001 Sum Problem 数学 HDU 1002 A + B Problem II 高精度加法 HDU 1003 Maxsum 贪心 HDU 1004 Let the Balloon Rise 字典树,map HDU 1005 Number Sequence 求数列循环节 HDU 1007 Quoit Design 最近点对 HDU 1008 Elevator 模拟 HDU 1010 Tempter of th…

ACM-简单题之Ignatius and the Princess II——hdu1027

转载请注明出处:http://blog.csdn.net/lttree Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4436 Accepted Submission(s): 2642 Problem Description Now our hero finds the…

ACM-简单的主题Ignatius and the Princess II——hdu1027

转载请注明出处:http://blog.csdn.net/lttree Ignatius and the Princess II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 4436 Accepted Submission(s): 2642 Problem Description Now our hero finds the…

第一周训练 | STL和基本数据结构

A - 圆桌问题: HDU - 4841 #include<iostream> #include<vector> #include<stdio.h> #include<string> using namespace std; int main() { vector<int> table; int n,m; while(scanf("%d%d",&n,&m)!=EOF) { table.clear(); ;i&l…

HDU——PKU题目分类

HDU 模拟题, 枚举1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 1070 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201…

[转] HDU 题目分类

转载来自:http://www.cppblog.com/acronix/archive/2010/09/24/127536.aspx 分类一: 基础题:1000.1001.1004.1005.1008.1012.1013.1014.1017.1019.1021.1028.1029.1032.1037.1040.1048.1056.1058.1061.1070.1076.1089.1090.1091.1092.1093.1094.1095.1096.1097.1098.1106.1108.1157…

HDU ACM 题目分类

模拟题, 枚举1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 1070 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201 120…

hdu 1038 Biker's Trip Odometer（水题）

题目链接:http://acm.hdu.edu.cn/showproblem.php? pid=1038 Biker's Trip Odometer Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5226 Accepted Submission(s): 3476 Problem Description Most bicycle…

HDU 5643 King's Game 打表

King's Game 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5643 Description In order to remember history, King plans to play losephus problem in the parade gap.He calls n(1≤n≤5000) soldiers, counterclockwise in a circle, in label 1,2,3...n. The firs…

转载：hdu 题目分类（侵删）

转载:from http://blog.csdn.net/qq_28236309/article/details/47818349 基础题:1000.1001.1004.1005.1008.1012.1013.1014.1017.1019.1021.1028.1029. 1032.1037.1040.1048.1056.1058.1061.1070.1076.1089.1090.1091.1092.1093. 1094.1095.1096.1097.1098.1106.1108.1157.116…