[title]
lydsy
Given nnn strings, for each string, ask how many substrings appear only in this string.
n,∑∣S∣≤105n,\sum|S|\leq 10^5n,∑∣S∣≤105
[solutions]
Write on the board.
After the generalized SAM\text{SAM}SAM is built, the right\text{right}right set can be merged from bottom to top. The implementation is to mark each end node with a color. If the marks are the same, it's better to set − 1-1 − 1.
The attempt to break the list failed.
[reference code]
#include<bits/stdc++.h> using namespace std; const int N=2e5+10; int n,f[N],b[N],c[N]; long long ans[N]; char s[N]; struct SAM { int sz,las,fa[N],mx[N],ch[N][26]; void extend(int x) { int p,np,q,nq; if(ch[las][x]) { p=las;las=q=ch[p][x];//be careful here, las=ch[p][x] if(mx[q]==mx[p]+1) return; las=nq=++sz;mx[nq]=mx[p]+1; memcpy(ch[nq],ch[q],sizeof(ch[q])); fa[nq]=fa[q];fa[q]=nq; for(;p && ch[p][x]==q;p=fa[p]) ch[p][x]=nq; return; } p=las;np=las=++sz;mx[np]=mx[p]+1; for(;p && !ch[p][x];p=fa[p]) ch[p][x]=np; if(!p) fa[np]=1; else { q=ch[p][x]; if(mx[q]==mx[p]+1) fa[np]=q; else { nq=++sz;mx[nq]=mx[p]+1; memcpy(ch[nq],ch[q],sizeof(ch[q])); fa[nq]=fa[q];fa[q]=fa[np]=nq; for(;p && ch[p][x]==q;p=fa[p]) ch[p][x]=nq; } } } void merge() { for(int i=1;i<=sz;++i) b[mx[i]]++; for(int i=1;i<=sz;++i) b[i]+=b[i-1]; for(int i=sz;i;--i) c[b[mx[i]]--]=i; for(int i=sz,x;i;--i) { x=c[i]; if(~f[x]) ans[f[x]]+=mx[x]-mx[fa[x]]; if(f[fa[x]] && f[fa[x]]!=f[x]) f[fa[x]]=-1; else f[fa[x]]=f[x]; } } }T; int main() { #ifdef Durant_Lee freopen("BZOJ5137.in","r",stdin); freopen("BZOJ5137.out","w",stdout); #endif scanf("%d",&n);T.sz=1; for(int i=1;i<=n;++i) { T.las=1;scanf("%s",s+1);int len=strlen(s+1); for(int j=1;j<=len;++j) { T.extend(s[j]-'a'); if(!f[T.las]) f[T.las]=i; else f[T.las]=-1; } } T.merge(); for(int i=1;i<=n;++i) printf("%lld",ans[i]),putchar('\n'); return 0; }