HDOJ 2609 How many (最小表示法)
来源:互联网 发布:淘宝饰品店装修图 编辑:程序博客网 时间:2024/06/06 23:55
How many
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 990 Accepted Submission(s): 382
Problem Description
Give you n ( n < 10000) necklaces ,the length of necklace will not large than 100,tell me
How many kinds of necklaces total have.(if two necklaces can equal by rotating ,we say the two necklaces are some).
For example 0110 express a necklace, you can rotate it. 0110 -> 1100 -> 1001 -> 0011->0110.
How many kinds of necklaces total have.(if two necklaces can equal by rotating ,we say the two necklaces are some).
For example 0110 express a necklace, you can rotate it. 0110 -> 1100 -> 1001 -> 0011->0110.
Input
The input contains multiple test cases.
Each test case include: first one integers n. (2<=n<=10000)
Next n lines follow. Each line has a equal length character string. (string only include '0','1').
Each test case include: first one integers n. (2<=n<=10000)
Next n lines follow. Each line has a equal length character string. (string only include '0','1').
Output
For each test case output a integer , how many different necklaces.
Sample Input
4011011001001001141010010110000001
Sample Output
12
解题思路:
最开始的时候用暴力。即将字符串复制一遍,然后一个个查找。果断TLE...
后来用了kmp优化,还是TLE
查了资料,原来处理字符串的循环同构可以用最小表示法。
代码:
#include<iostream>#include<cstdio>#include<cstring>#include<algorithm>using namespace std;char str[110];struct node{ char ch[110];}st[10010];int min_express(){ int len=strlen(str); int i=0,j=1,k=0; while(i<len && j<len && k<len) { int t; t=str[(i+k)%len]-str[(j+k)%len]; if (t==0) k++; else { if (t>0) i=i+k+1; else j=j+k+1; if (i==j) j++; k=0; } } return i<j? i:j;}bool cmp(node a, node b){ return (strcmp(a.ch, b.ch)<0);}int main (){ int n,i,j,t=0,len; while (cin>>n) { for (i=0; i<n; i++) { t=0; scanf("%s",str); len=strlen(str); int k=min_express(); for (j=k; j<len; j++) st[i].ch[t++]=str[j]; for (j=0; j<k; j++) st[i].ch[t++]=str[j]; st[i].ch[t]='\0'; } sort(st,st+n,cmp); int sum=0; for (i=0; i<n-1; i++) if (strcmp(st[i].ch, st[i+1].ch)!=0) sum++; cout<<sum+1<<endl; } return 0;}
- HDOJ 2609 How many (最小表示法)
- hdu 2609 How many(最小表示法)
- [最小表示法] hdu 2609 How many
- [最小表示法] HDU 2609 How many
- HDU - 2609 How many(最小表示法)
- HDU 2609 How many(最小表示法)
- HDU-2609 How many (最小表示法)
- HDU 2609 How many [最小表示法]
- HDU2609 How many(最小表示法)
- hdu 2609 How many(最小表示法)
- hdu 2609 How many (最小表示法+map)
- hdu 2609 How many(字符串的最小表示法)
- HDU 2609 How many(最小表示法)
- HDU 2609 How many (最小表示法)
- HDU 2609 How many(字符串同构,最小表示法)
- HDU 2609 How many(最小表示法)
- HDU 2609 How Many [最小表示法] [字符串处理]
- HDU 2609 How Many最大最小表示法的模板
- linux下下载工具
- file函数
- php安装configure参数
- String str1="abc"; 内存分布问题
- HDOJ 1711 Number Sequence (kmp)
- HDOJ 2609 How many (最小表示法)
- 多态和继承(3)
- jquery.validate.js表单验证
- pickle模块
- 【2013-06-10】首章
- Document多种方式解析xml文件
- Android玄铁剑之TextView之写点儿嘛都行
- HDOJ 1702 ACboy needs your help again! (STL 栈 队列)
- ./configure 权限不够