标签:sub width scan hat orm clu const enter memory
Time Limit: 3000MS | Memory Limit: 65536K | |
Total Submissions: 64350 | Accepted: 26531 |
Description
Input
Output
Sample Input
abcd aaaa ababab .
Sample Output
1 4 3
Hint
Source
本题利用next数组的性质,如果n%(n-f[n]) ==0 ,那么循环节长度就是n-f[n],个数就是n/(n-f[n]),否则循环节就是1个。
1 #include<iostream> 2 #include<cstring> 3 #include<cmath> 4 #include<cstdio> 5 #include<algorithm> 6 using namespace std; 7 int const N=1000000+3; 8 char s[N]; 9 int n,f[N]; 10 int getnext(){ 11 int j=0; 12 for(int i=2;i<=n;i++){ 13 while (j && s[i-1]!=s[j]) j=f[j]; 14 f[i]=s[i-1]==s[j] ? ++j:0; 15 } 16 } 17 int main(){ 18 while (gets(s) && s[0]!=‘.‘){ 19 n=strlen(s); 20 getnext(); 21 if(n % (n-f[n]) ==0) printf("%d\n",n/(n-f[n])); 22 else printf("1\n"); 23 } 24 return 0; 25 }
标签:sub width scan hat orm clu const enter memory
原文地址:https://www.cnblogs.com/ZJXXCN/p/10961657.html