81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
#include<stdio.h>
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#include<string.h>
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#define max 11000
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int wa[max],wb[max],wv[max],ws[max];
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int rank[max],height[max];
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int cmp(int *r,int a,int b,int l)
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{
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return r[a]==r[b]&&r[a+l]==r[b+l];
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}
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void da(int *r,int *sa,int n,int m)
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{
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int i,j,p,*x=wa,*y=wb,*t;
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for(i=0; i<m; i++) ws[i]=0;
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for(i=0; i<n; i++) ws[x[i]=r[i]]++;
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for(i=1; i<m; i++) ws[i]+=ws[i-1];
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for(i=n-1; i>=0; i--) sa[--ws[x[i]]]=i;
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for(p=1,j=1; p<n; j*=2,m=p)
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{
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for(p=0,i=n-j; i<n; i++) y[p++]=i;
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for(i=0; i<n; i++) if(sa[i]>=j) y[p++]=sa[i]-j;
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for(i=0; i<n; i++) wv[i]=x[y[i]];
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for(i=0; i<m; i++) ws[i]=0;
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for(i=0; i<n; i++) ws[wv[i]]++;
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for(i=1; i<m; i++) ws[i]+=ws[i-1];
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for(i=n-1; i>=0; i--) sa[--ws[wv[i]]]=y[i];
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for(t=x,x=y,y=t,p=1,x[sa[0]]=0,i=1; i<n; i++)
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x[sa[i]]=cmp(y,sa[i-1],sa[i],j)?p-1:p++;
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}
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return ;
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}
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void calheight(int *r,int *sa,int n)
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{
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int i,j,k=0;
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for(i=1; i<=n; i++)rank[sa[i]]=i;
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for(i=0; i<n; height[rank[i++]]=k)
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for(k?k--:0,j=sa[rank[i]-1]; r[i+k]==r[j+k]; k++);
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return;
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}
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int main()
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{
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char str1[max];
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int str[max];
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int sa[max];
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int mint;
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int maxt;
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while(scanf("%s",str1)!=EOF)
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{
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int len=strlen(str1);
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if(str1[0]=='#')
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break;
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for(int i=0;i<len;i++)
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str[i]=str1[i]-'a'+1;
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str[len]=0;
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da(str,sa,len+1,27);
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calheight(str,sa,len);
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int ans=0;
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for(int i=1; i<=(len+1)/2; i++)
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{
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mint=1001;
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maxt=-1;
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for(int j=1; j<=len; j++)
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{
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if(height[j]>=i)
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{
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int tem=sa[j-1]>sa[j]?sa[j]:sa[j-1];
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mint=mint>tem?tem:mint;
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tem=sa[j-1]>sa[j]?sa[j-1]:sa[j];
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maxt=maxt>tem?maxt:tem; }
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else
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{
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if(mint+i<=maxt)ans++;
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mint=1001,maxt=-1;
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}
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}
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if(mint+i<=maxt)ans++;
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}
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printf("%d\n",ans);
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}
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return 0;
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}
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