89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
#include<cstdio>
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#include<cstring>
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#include<map>
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#define maxn 100010
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#define p 33
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using namespace std;
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typedef unsigned long long ll;
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struct Tree{
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int l,r;
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ll hashes;
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}tree[300000];
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char str[2000100];
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ll hh[maxn];
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void init(){
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int i;
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hh[0]=1;
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for(i=1;i<=maxn;i++)
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hh[i]=hh[i-1]*p;
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}
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ll calhash(){
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int i,len=strlen(str);
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ll sum=0;
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for(i=0;i<len;i++)
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sum=sum*p+str[i]-'a'+1;
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return sum;
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}
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void build(int s,int t,int id){
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tree[id].l=s;tree[id].r=t;
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if(s==t){
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tree[id].hashes=str[s]-'a'+1;
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return;
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}
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int mid=(s+t)>>1;
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build(s,mid,id<<1);
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build(mid+1,t,id<<1|1);
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tree[id].hashes=tree[id<<1].hashes*hh[t-mid]+tree[id<<1|1].hashes;
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}
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void update(int l,int id){
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if(tree[id].l==tree[id].r){
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tree[id].hashes=str[l]-'a'+1;
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return ;
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}
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int mid=(tree[id].l+tree[id].r)>>1;
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if(l<=mid) update(l,id<<1);
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else update(l,id<<1|1);
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tree[id].hashes=tree[id<<1].hashes*hh[tree[id].r-mid]+tree[id<<1|1].hashes;
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}
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ll query(int s,int t,int id){
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if(tree[id].l==s && tree[id].r==t)
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return tree[id].hashes;
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int mid=(tree[id].l+tree[id].r)>>1;
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if(t<=mid) return query(s,t,id<<1);
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else if(s>mid) return query(s,t,id<<1|1);
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return query(s,mid,id<<1)*hh[t-mid]+query(mid+1,t,id<<1|1);
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}
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int main(){
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int t,T,pos,l,r,i,q,n;
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char s1[10],s2[10];
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map<ll,int>mp;
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init();
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scanf("%d",&T);
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for(t=1;t<=T;t++){
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printf("Case #%d:\n",t);
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scanf("%d",&n);
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mp.clear();
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for(i=1;i<=n;i++){
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scanf("%s",str);
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mp.insert(make_pair(calhash(),1));
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}
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scanf("%s",str);
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int len=strlen(str);
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build(0,len-1,1);
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scanf("%d",&q);
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for(i=1;i<=q;i++){
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scanf("%s",s1);
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if(s1[0]=='C'){
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scanf("%d%s",&pos,s2);
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str[pos]=s2[0];
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update(pos,1);
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}
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else{
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scanf("%d %d",&l,&r);
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if(mp.find(query(l,r,1))!=mp.end()) printf("Yes\n");
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else printf("No\n");
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}
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}
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}
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}
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