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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#440153#5014. 复读程度C1942huangjiaxu0 62ms53112kbC++144.2kb2024-06-13 10:31:062024-06-13 10:31:07

Judging History

你现在查看的是最新测评结果

  • [2024-06-13 10:31:07]
  • 评测
  • 测评结果:0
  • 用时:62ms
  • 内存:53112kb
  • [2024-06-13 10:31:06]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=2e5+5;
typedef unsigned long long ull;
int n,q,tot;
ull wl[N],wr[N];
char s[N];
struct node{
	int ch[26],len,fa;
};
struct SAM{
	node tr[N];
	int str[N],son[N][26],occ[N],pos[N],bel[N],ip[N],sz[N];
	ull sum[N];
	int cnt=1,ls=1;
	int fa[N][19],in[N],out[N];
	vector<int>e[N];
	void ins(int c){
		int p=ls,np=ls=++cnt;
		tr[np].len=tr[p].len+1;
		str[tr[np].len]=c,ip[tr[np].len]=np;
		for(;p&&!tr[p].ch[c];p=tr[p].fa)tr[p].ch[c]=np;
		if(!p)tr[np].fa=1;
		else{
			int q=tr[p].ch[c];
			if(tr[q].len==tr[p].len+1)tr[np].fa=q;
			else{
				int nq=++cnt;tr[nq]=tr[q];
				tr[nq].len=tr[p].len+1,tr[np].fa=tr[q].fa=nq;
				for(;p&&tr[p].ch[c]==q;p=tr[p].fa)tr[p].ch[c]=nq;
			}
		}
	}
	void dfs(int x){
		in[x]=++in[0];
		for(int i=1;i<19;++i)fa[x][i]=fa[fa[x][i-1]][i-1];
		for(auto v:e[x]){
			fa[v][0]=x;
			sz[v]=tr[v].len-tr[x].len;
			dfs(v);
			sum[x]+=sum[v];
			occ[x]+=occ[v];
			pos[x]=min(pos[x],pos[v]);
		}
		out[x]=in[0];
	}
	void build(ull *w){
		for(int i=1;i<=cnt;++i)e[tr[i].fa].emplace_back(i),pos[i]=1e9;
		int u=1;
		for(int i=1;i<=n;++i){
			u=tr[u].ch[str[i]];
			++occ[u];
			pos[u]=i,sum[u]=w[i];
		}
		dfs(1);
		for(int i=2;i<=cnt;++i)son[tr[i].fa][str[pos[i]-tr[tr[i].fa].len]]=i;
	}
	void feed(vector<int>* res){
		for(int u=cnt;u;--u){
			if(!bel[u])for(int i=0;i<26;++i)if(tr[u].ch[i])bel[u]=bel[tr[u].ch[i]];
			res[bel[u]].push_back(u);
		}
	}
	int find(int l,int r){
		int x=ip[r];
		for(int i=18;~i;--i)if(fa[x][i]&&tr[fa[x][i]].len>=r-l+1)x=fa[x][i];
		return x;
	}
	void print(){
		printf("cnt %d\n",cnt);
		for(int i=2;i<=cnt;++i){
			printf("id %d\n",i);
			printf("ln %d fa %d\n",tr[i].len,tr[i].fa);
			printf("occ %d pos %d sum %llu\n",occ[i],pos[i],sum[i]);
		}
	}
}s1,s2;
vector<int>rid[N],cid[N];
int rp[N],cp[N],occ[N];
void dfs(int x,int y){
	bool fg=s1.tr[x].len==s2.tr[y].len;
	if(fg)s1.bel[x]=s2.bel[y]=++tot,occ[tot]=s1.occ[x];
	for(int i=0;i<26;++i)if(s1.tr[s1.tr[x].ch[i]].len==s1.tr[x].len+1)
		dfs(s1.tr[x].ch[i],fg?s2.son[y][i]:y);
}
ull calc(int X,int Y){
	ull res=0;
	for(int i=2;i<=tot;++i){
		for(int j=0;j<rid[i].size();++j){
			int v=rid[i][j];
			if(s1.in[v]>X)continue;
			for(int k=0;k<s1.sz[v];++k){
				int u=cid[i][k];
				if(s2.in[u]>Y)continue;
				res+=1ll*s1.sum[v]*s2.sum[u]*occ[i];
			}
		}
	}
	return res;
}
ull qry(int l1,int r1,int l2,int r2){
	int p1=s1.find(l1,r1),p2=s2.find(n-r2+1,n-l2+1);
	int ln1=r1-l1+1,ln2=r2-l2+1;
	int y1=rp[p1],x1=s1.tr[p1].len-ln1,x2=cp[p2],y2=s2.tr[p2].len-ln2;
	//printf("?%d %d %d %d %d %d %d %d\n",s1.bel[p1],s2.bel[p2],p1,p2,x1,y1,x2,y2);
	ull res=0;
	if(s1.bel[p1]==s2.bel[p2]){
		if(x1!=x2||y1!=y2){
			if(x2>=x1&&x2<s1.sz[p1]&&y1>=y2&&y1<s2.sz[p2])res-=s1.sum[p1]*s2.sum[p2]*s1.occ[p1];
		}
	}else{
		int o=s1.bel[p1];
		for(int j=x1+1;j<s1.sz[p1];++j){
			int u=cid[o][j];
			if(s2.in[u]>=s2.in[p2]&&s2.in[u]<=s2.out[p2]){
				res-=s1.sum[p1]*s2.sum[u]*occ[o];
			}
		}
		o=s2.bel[p2];
		for(int j=y2+1;j<s2.sz[p2];++j){
			int u=rid[o][j];
			if(s1.in[u]>=s1.in[p1]&&s1.in[u]<=s1.out[p1]){
				res-=s1.sum[u]*s2.sum[p2]*occ[o];
			}
		}
	}
	res+=calc(s1.out[p1],s2.out[p2]);
	res-=calc(s1.in[p1]-1,s2.out[p2]);
	res-=calc(s1.out[p1],s2.in[p2]-1);
	res+=calc(s1.in[p1]-1,s2.in[p2]-1);
	return res;
}
void Print(){
	printf("tot %d\n",tot);
	for(int i=1;i<=tot;++i){
		printf("bel %d occ %d\n",i,occ[i]);
		printf("rid\n");
		for(auto v:rid[i])printf("%d %d\n",v,s1.sz[v]);
		printf("cid\n");
		for(auto v:cid[i])printf("%d %d\n",v,s2.sz[v]);putchar(10);
	}
}
int main(){
	scanf("%d%d",&n,&q);
	scanf("%s",s+1);
	for(int i=1;i<=n;++i)scanf("%llu",&wl[i]);
	for(int i=1;i<=n;++i)scanf("%llu",&wr[i]);
	for(int i=1;i<=n;++i)s[i]-='a';
	for(int i=1;i<=n;++i)s1.ins(s[i]);
	for(int i=n;i;--i)s2.ins(s[i]);
	s1.build(wr);
	reverse(wl+1,wl+n+1);
	s2.build(wl);
	dfs(1,1);
	s1.feed(rid),s2.feed(cid);
	//s1.print(),s2.print();
	//Print();
	for(int i=1;i<=tot;++i){
		for(int j=0;j<rid[i].size();++j)rp[rid[i][j]]=j;
		for(int j=0;j<cid[i].size();++j)cp[cid[i][j]]=j;
	}
	for(int i=1,l1,r1,l2,r2;i<=q;++i){
		scanf("%d%d%d%d",&l2,&r2,&l1,&r1);
		printf("%llu\n",qry(l1,r1,l2,r2));
	}
	return 0;
}

详细

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 7
Accepted
time: 45ms
memory: 53112kb

input:

500 500
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...

output:

15720454042420499810
4058077030882532408
14651762045124606089
4030024243931986061
18033423360813892607
9470601111824364484
3883374861354698625
16650831689368240202
8339028189650687576
2683289915379600554
13133811958066776394
14181220923901262251
18173739360450512256
13142314545999179754
148925491596...

result:

ok 500 lines

Test #2:

score: -7
Wrong Answer
time: 62ms
memory: 51160kb

input:

500 500
zszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszzszszzszzszszzszszzszzszszzszszzszz...

output:

4843650749197240262
7777110205341291111
533576317536031175
16712994243500559204
9988085877723856684
9644193924482321332
3247342125341043527
18152622312040037224
13045121434804725850
10593529771756855740
13316626648976199221
6181092693273210423
9148547538129213975
9376364571107435561
2140403332478526...

result:

wrong answer 99th lines differ - expected: '13228857355690988704', found: '3730694810645784968'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #2:

0%

Subtask #4:

score: 0
Time Limit Exceeded

Test #22:

score: 0
Time Limit Exceeded

input:

100000 100000
zbbabaabbaababbabaababbaabbabaabbaababbaabbabaababbabaabbaababbabaababbaabbabaababbabaabbaababbaabbabaabbaababbabaababbaabbabaabbaababbaabbabaababbabaabbaababbaabbabaabbaababbabaababbaabbabaababbabaabbaababbabaababbaabbabaabbaababbaabbabaababbabaabbaababbabaababbaabbabaababbabaabbaabab...

output:


result:


Subtask #5:

score: 0
Skipped

Dependency #4:

0%

Subtask #6:

score: 0
Skipped

Dependency #2:

0%

Subtask #7:

score: 0
Skipped

Dependency #3:

0%