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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#561253 | #7839. 虹 | DaiRuiChen007 | 0 | 0ms | 0kb | C++17 | 2.9kb | 2024-09-12 21:27:47 | 2024-09-12 21:27:47 |
answer
#include<bits/stdc++.h>
using namespace std;
const int MAXN=8e4+5,B=282,X=19901991,Y=20242024;
int n,q,z[MAXN],bel[MAXN],lp[MAXN],rp[MAXN];
vector <int> G[MAXN];
int fa[MAXN],dfn[MAXN],dcnt,st[MAXN][18],dl[MAXN][18],dr[MAXN][18];
int bit(int x) { return 1<<x; }
int cmp(int x,int y) { return dfn[x]<dfn[y]?x:y; }
int qdl(int l,int r) {
int k=__lg(r-l+1);
return min(dl[l][k],dl[r-bit(k)+1][k]);
}
int qdr(int l,int r) {
int k=__lg(r-l+1);
return max(dr[l][k],dr[r-bit(k)+1][k]);
}
int lca(int l,int r) {
int k=__lg(r-l+1);
return cmp(st[l][k],st[r-bit(k)+1][k]);
}
void dfs0(int u,int fz) {
fa[u]=fz,dl[u][0]=dr[u][0]=dfn[u]=++dcnt,st[dcnt][0]=fz;
for(int v:G[u]) if(v^fz) dfs0(v,u);
}
int op[MAXN],ql[MAXN],qr[MAXN];
bitset <MAXN> F[MAXN],S;
vector <int> wl[MAXN],wr[MAXN],wx[MAXN],LCA[MAXN];
void add(bitset<MAXN>&s,int u) { for(;u&&!s[u];u=fa[u]) s.set(u); }
void dfs1(int u) {
S.set(u);
for(int i:LCA[u]) F[i]^=S;
for(int v:G[u]) if(v^fa[u]) dfs1(v);
S.reset(u);
}
int pr[MAXN],tot,g[MAXN];
bool isc[MAXN];
void dfs2(int o,int x) {
if(o>tot) {
for(int i:wx[x]) F[i]^=S;
return ;
}
int p=pr[o],pw=1;
dfs2(o+1,x);
while(x<=n) {
if(1ll*x*p>n) break;
x*=p,pw*=p;
for(int i=pw;i<=n;i+=pw) S[i]=z[g[i]*=p];
dfs2(o+1,x);
}
}
signed main() {
ios::sync_with_stdio(false);
cin>>n>>q;
for(int i=1;i<=n;++i) cin>>z[i],z[i]&=1;
for(int i=1;(i-1)*B+1<=n;++i) {
lp[i]=(i-1)*B+1,rp[i]=min(i*B,n);
fill(bel+lp[i],bel+rp[i]+1,i);
}
for(int i=1,u,v;i<n;++i) cin>>u>>v,G[u].push_back(v),G[v].push_back(u);
dfs0(1,0);
for(int k=1;k<18;++k) for(int i=1;i+bit(k)-1<=n;++i) {
st[i][k]=cmp(st[i][k-1],st[i+bit(k-1)][k-1]);
dl[i][k]=min(dl[i][k-1],dl[i+bit(k-1)][k-1]);
dr[i][k]=max(dr[i][k-1],dr[i+bit(k-1)][k-1]);
}
for(int i=1,x;i<=q;++i) {
cin>>op[i]>>ql[i]>>qr[i];
if(op[i]==1) {
LCA[lca(qdl(ql[i],qr[i])+1,qdr(ql[i],qr[i]))].push_back(i);
if(bel[ql[i]]==bel[qr[i]]) for(int u=ql[i];u<=qr[i];++u) add(F[i],u);
else wl[bel[ql[i]]].push_back(i),wr[bel[ql[i]]+1].push_back(i);
} else cin>>x,wx[x].push_back(i);
}
for(int o=1;o<=bel[n];++o) {
sort(wl[o].begin(),wl[o].end(),[&](int x,int y){ return ql[x]>ql[y]; });
sort(wr[o].begin(),wr[o].end(),[&](int x,int y){ return qr[x]<qr[y]; });
S.reset();
for(int i=lp[o],j=0,s=wr[o].size();j<s;++i) {
add(S,i);
while(j<s&&qr[wr[o][j]]==i) F[wr[o][j++]]|=S;
}
S.reset();
for(int i=rp[o],j=0,s=wl[o].size();j<s;++i) {
add(S,i);
while(j<s&&ql[wl[o][j]]==i) F[wl[o][j++]]|=S;
}
}
S.reset(),dfs1(1);
for(int i=1;i<=q;++i) F[i]^=F[i-1];
for(int i=2;i<=n;++i) if(!isc[i]) {
pr[++tot]=i;
for(int j=2*i;j<=n;j+=i) isc[j]=true;
}
for(int i=1;i<=n;++i) S[i]=z[g[i]=1];
S.reset(),dfs2(1,1);
for(int i=1;i<=q;++i) if(op[i]==2) {
int l=ql[i],r=qr[i];
F[i]>>=l,F[i]<<=(MAXN-(r-l+1));
int s=F[i].count();
cout<<(1ll*s*(X-1)+r-l+1)%Y<<"\n";
}
return 0;
}
详细
Subtask #1:
score: 0
Runtime Error
Test #1:
score: 0
Runtime Error
input:
998 1000 955556485 952505211 899166521 258704448 894183248 636280051 62949347 983956660 113872828 588367167 208142006 665025449 944228063 284736189 169202015 56096447 404419923 30158095 111191865 717455344 790159420 391379127 208279658 426780799 886604643 940903663 618716147 773652834 385881251 1593...
output:
result:
Subtask #2:
score: 0
Runtime Error
Test #4:
score: 0
Runtime Error
input:
65531 65535 968854923 932574892 192297572 866236747 654755663 148562561 273214896 947434573 938626677 992982166 219888853 229840279 676071061 383387319 372883953 729287797 601010887 31942080 990584163 823724544 181337075 918252129 896876911 768539961 357780649 890577681 819641335 320266037 55445939 ...
output:
result:
Subtask #3:
score: 0
Skipped
Dependency #2:
0%
Subtask #4:
score: 0
Skipped
Dependency #1:
0%
Subtask #5:
score: 0
Skipped
Dependency #1:
0%