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#305340#4909. 《关于因为与去年互测zjk撞题而不得不改题这回事》fireince0 0ms79516kbC++144.6kb2024-01-15 07:22:022024-01-15 07:22:02

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你现在查看的是最新测评结果

  • [2024-01-15 07:22:02]
  • 评测
  • 测评结果:0
  • 用时:0ms
  • 内存:79516kb
  • [2024-01-15 07:22:02]
  • 提交

answer

#include<iostream>
#include<cassert>
#include<queue>
#include<array>
#include<cstdio>
#include<algorithm>
#include<vector>
#include<cstring>
#define endl '\n'
using namespace std;
typedef long long ll;
typedef pair<ll,int> pii;

const int N=1e6+10,K=63;
int n;
vector<int> G[N];
ll val[N];
typedef vector<ll> Dat;

namespace IO{
    #define BUF_SIZE (1<<16)
    #define OUT_SIZE (1<<16)
    bool IOerror=0;
    inline char nc(){static char buf[BUF_SIZE],*p1=buf+BUF_SIZE,*pend=buf+BUF_SIZE;if(p1==pend){p1=buf;pend=buf+fread(buf,1,BUF_SIZE,stdin);if(pend==p1)return IOerror=1,-1;}return *p1++;}
    inline bool blank(char ch){return ch==' '||ch=='\n'||ch=='\r'||ch=='\t';}
    inline void read(int &x){bool sign=0;char ch=nc();x=0;for(;blank(ch);ch=nc());if(IOerror)return;if(ch=='-')sign=1,ch=nc();for(;ch>='0'&&ch<='9';ch=nc())x=x*10+ch-'0';if(sign)x=-x;}
    inline void read(ll &x){bool sign=0;char ch=nc();x=0;for(;blank(ch);ch=nc());if(IOerror)return;if(ch=='-')sign=1,ch=nc();for(;ch>='0'&&ch<='9';ch=nc())x=x*10+ch-'0';if(sign)x=-x;}
    struct Ostream_fwrite{
        char *buf,*p1,*pend;
        Ostream_fwrite(){buf=new char[BUF_SIZE];p1=buf;pend=buf+BUF_SIZE;}
        inline void out(char ch){if(p1==pend){fwrite(buf,1,BUF_SIZE,stdout);p1=buf;}*p1++=ch;}
        inline void print(ll x){static char s[25],*s1;s1=s;if(!x)*s1++='0';if(x<0)out('-'),x=-x;while(x)*s1++=x%10+'0',x/=10;while(s1--!=s)out(*s1);}
        inline void println(ll x){print(x);out('\n');}
        inline void flush(){if(p1!=buf){fwrite(buf,1,p1-buf,stdout);p1=buf;}}
        ~Ostream_fwrite(){flush();}
    }Ostream;
    inline void print(ll x){Ostream.print(x);}
    inline void println(ll x){Ostream.println(x);}
    inline void println(){Ostream.out('\n');}
    inline void flush(){Ostream.flush();}
    #undef OUT_SIZE
    #undef BUF_SIZE
}using namespace IO;

const int H=20
;
ll f[H][N];
int fp[H][N];
struct DS{
    void build(int n,ll* a){
        for(int i=1;i<=n;i++)f[0][i]=a[i],fp[0][i]=i;
        for(int i=1;i<H;i++)
            for(int j=1;j+(1<<i)-1<=n;j++)
                f[i][j]=max(f[i-1][j],f[i-1][j+1<<i-1]),
                fp[i][j]=f[i-1][j]>f[i-1][j+(1<<i-1)]?fp[i-1][j]:fp[i-1][j+(1<<i-1)];
    }
    pii query(int l,int r){
        if(l>r)return {0,0};
        int len=r-l+1,h=__lg(len);
        ll v=max(f[h][l],f[h][r-(1<<h)+1]);
        int p=v==f[h][l]?fp[h][l]:fp[h][r];
        return {v,p};
    }
} ds;

int dfn[N],top[N],dcnt,siz[N],son[N],fa[N],dep[N];
ll arr[N];
void dfs1(int u,int f){
    fa[u]=f,dep[u]=dep[f]+1,siz[u]=1;
    for(int v:G[u]){
        if(v==f)continue;
        dfs1(v,u);
        siz[u]+=siz[v];
        if(siz[son[u]]<siz[v])son[u]=v;
    }
}
void dfs2(int u,int tp){
    top[u]=tp,dfn[u]=++dcnt,arr[dfn[u]]=val[u];
    if(son[u])dfs2(son[u],tp);
    for(int v:G[u]){
        if(v==son[u]||v==fa[u])continue;
        dfs2(v,v);
    }
}
typedef array<ll,4> rg;
struct cmp{
    bool operator()(const rg& a,const rg& b) const{
        return a[0]<b[0];
    }
};
typedef priority_queue<rg,vector<rg>,cmp> pqt;
void insertRange(int l,int r,pqt& pq){
    auto res=ds.query(l,r);
    pq.push({res.first,res.second,l,r});
};
Dat queryPoints(int u,int v,int m){
    Dat res;
    pqt pq;
    while(top[u]!=top[v]){
        if(dep[top[u]]<dep[top[v]])swap(u,v);
        insertRange(dfn[top[u]],dfn[u],pq);
        u=fa[top[u]];
    }
    if(dep[u]<dep[v])swap(u,v);
    insertRange(dfn[v],dfn[u],pq);
    while(pq.size()&&res.size()<m){
        auto a=pq.top();
        pq.pop();
        res.push_back(a[0]);
        if(a[1]!=a[2])insertRange(a[2],a[1]-1,pq);
        if(a[1]!=a[3])insertRange(a[1]+1,a[3],pq);
    }
    return res;
}
ll queryVal(Dat& dt,int m){
    ll ans=0;
    for(int i=K;i>=0;i--){
        int cnt=0;
        Dat ndt;
        for(ll j:dt)if(j>>i&1)cnt++,ndt.push_back(j);
        if(cnt>=m){
            ans|=(1ll<<i);
            dt=ndt;
        }
    }
    return ans;
}

signed main(){
    read(n);
    for(int i=1;i<n;i++){
        int u,v;
        read(u),read(v);
        G[u].push_back(v);
        G[v].push_back(u);
    }
    for(int i=1;i<=n;i++)read(val[i]);
    dfs1(1,0);
    dfs2(1,1);
    ds.build(n,arr);
    int q;
    read(q);
    ll lastans=0;
    for(int i=1;i<=q;i++){
        int u,v,m;
        read(u),read(v),read(m);
        u=(u^lastans)%n+1,v=(v^lastans)%n+1;
        Dat dt=queryPoints(u,v,K*min(3,m-1));
        if(dt.size()<m){
            lastans=0;
        }else lastans=queryVal(dt,m);
        println(lastans);
    }
    return 0;
}

详细

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 79516kb

input:

931
184 700
485 184
419 485
386 419
308 386
114 308
301 114
598 301
120 598
144 120
595 144
812 595
236 812
7 236
543 7
327 543
858 327
68 858
177 68
398 177
899 398
408 899
848 408
202 848
269 202
304 269
540 304
647 540
672 647
314 672
157 314
241 157
745 241
300 745
343 300
92 343
117 92
30 117
2...

output:

1152921504606846992

result:

wrong answer 1st numbers differ - expected: '1152921504606846976', found: '1152921504606846992'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Runtime Error

Test #17:

score: 0
Runtime Error

input:

99115
98506 98914
1961 98506
45808 1961
23027 45808
16655 23027
66393 16655
77250 66393
68284 77250
53684 68284
21189 53684
84955 21189
73464 84955
47574 73464
40651 47574
21101 40651
6589 21101
59680 6589
6185 59680
25529 6185
207 25529
33286 207
98459 33286
92565 98459
85446 92565
97388 85446
1630...

output:


result:


Subtask #4:

score: 0
Skipped

Dependency #1:

0%

Subtask #5:

score: 0
Skipped

Dependency #1:

0%

Subtask #6:

score: 0
Skipped

Dependency #5:

0%

Subtask #7:

score: 0
Runtime Error

Test #45:

score: 0
Runtime Error

input:

996678
2 1
3 1
4 1
5 1
6 3
7 5
8 5
9 5
10 7
11 8
12 9
13 1
14 2
15 7
16 4
17 5
18 17
19 16
20 2
21 1
22 1
23 9
24 17
25 19
26 10
27 9
28 7
29 25
30 25
31 4
32 11
33 31
34 21
35 13
36 19
37 25
38 10
39 11
40 20
41 35
42 1
43 19
44 20
45 41
46 1
47 19
48 5
49 28
50 21
51 33
52 7
53 14
54 21
55 20
56 1...

output:


result:


Subtask #8:

score: 0
Skipped

Dependency #1:

0%