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Submission #924664

# Submission time Handle Problem Language Result Execution time Memory
924664 2024-02-09T11:39:14 Z ttamx Tourism (JOI23_tourism) C++14
34 / 100
 5000 ms 93864 KB 
#include<bits/stdc++.h>
#include<queue>

using namespace std;

const int N=1e5+5;
const int M=3e5+5;
const int LG=20;

int n,m,q;
int c[N];
vector<int> adj[N];
int sz[N],hv[N],hd[N],pa[N],lv[N],tin[N],tout[N],pos[M];
int timer;
vector<pair<int,int>> qr[N],chain[N];
int ans[N];

struct Fenwick{
    int t[N];
    void update(int i,int v){
        for(;i<N;i+=i&-i)t[i]+=v;
    }
    int query(int i){
        int res=0;
        for(;i;i-=i&-i)res+=t[i];
        return res;
    }
}f;

template<class T,class cmp>
struct RMQ{
    T t[LG][M];
    T get_min(T a,T b){
        return cmp()(a,b)?a:b;
    }
    void build(){
        for(int i=0;i<LG-1;i++){
            for(int j=1;j+(2<<i)-1<M;j++){
                t[i+1][j]=get_min(t[i][j],t[i][j+(1<<i)]);
            }
        }
    }
    T query(int l,int r){
        int k=31-__builtin_clz(r-l+1);
        return get_min(t[k][l],t[k][r-(1<<k)+1]);
    }
};

RMQ<int,less<int>> rtin,rdep;
RMQ<int,greater<int>> rtout;

void dfs(int u,int p=0){
    tin[u]=++timer;
    pos[timer]=u;
    pa[u]=p;
    sz[u]=1;
    for(auto v:adj[u])if(v!=p){
        lv[v]=lv[u]+1;
        dfs(v,u);
        sz[u]+=sz[v];
        if(sz[v]>sz[hv[u]])hv[u]=v;
        pos[++timer]=u;
    }
    tout[u]=timer;
}

void hld(int u,int p=0){
    if(!hd[u])hd[u]=u;
    if(hv[u])hd[hv[u]]=hd[u],hld(hv[u],u);
    for(auto v:adj[u])if(v!=p&&v!=hv[u])hld(v,u);
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> m >> q;
    for(int i=1;i<n;i++){
        int u,v;
        cin >> u >> v;
        adj[u].emplace_back(v);
        adj[v].emplace_back(u);
    }
    for(int i=1;i<=m;i++)cin >> c[i];
    for(int i=1;i<=q;i++){
        int l,r;
        cin >> l >> r;
        qr[r].emplace_back(l,i);
    }
    dfs(1);
    hld(1);
    for(int i=1;i<=timer;i++)rdep.t[0][i]=lv[pos[i]];
    for(int i=1;i<=m;i++){
        rtin.t[0][i]=tin[c[i]];
        rtout.t[0][i]=tout[c[i]];
    }
    rdep.build();
    rtin.build();
    rtout.build();
    for(int r=1;r<=m;r++){
        for(int u=c[r];u;u=pa[u]){
            int h=hd[u];
            auto &ch=chain[h];
            while(!ch.empty()&&lv[ch.back().first]<=lv[u]){
                auto [v,i]=ch.back();
                ch.pop_back();
                int val=lv[v]-lv[h]+1;
                f.update(i,-val);
                if(!ch.empty())f.update(ch.back().second,val);
            }
            int val=lv[u]-lv[h]+1;
            if(!ch.empty())f.update(ch.back().second,-val);
            ch.emplace_back(u,r);
            f.update(r,val);
        }
        for(auto [l,i]:qr[r]){
            int u=rtin.query(l,r),v=rtout.query(l,r);
            ans[i]=f.query(r)-f.query(l-1)-rdep.query(u,v);
        }
    }
    for(int i=1;i<=q;i++)cout << ans[i] << "\n";
}

Compilation message

tourism.cpp: In function 'int main()':
tourism.cpp:103:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  103 |                 auto [v,i]=ch.back();
      |                      ^
tourism.cpp:114:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  114 |         for(auto [l,i]:qr[r]){
      |                  ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 82516 KB Output is correct
2 Correct 29 ms 82432 KB Output is correct
3 Correct 25 ms 82524 KB Output is correct
4 Correct 23 ms 82512 KB Output is correct
5 Correct 23 ms 82524 KB Output is correct
6 Correct 24 ms 82520 KB Output is correct
7 Correct 23 ms 82496 KB Output is correct
8 Correct 25 ms 82480 KB Output is correct
9 Correct 22 ms 82780 KB Output is correct
10 Correct 23 ms 82516 KB Output is correct
11 Correct 22 ms 82524 KB Output is correct
12 Correct 22 ms 82512 KB Output is correct
13 Correct 22 ms 82488 KB Output is correct
14 Correct 24 ms 82532 KB Output is correct
15 Correct 26 ms 82540 KB Output is correct
16 Correct 27 ms 82736 KB Output is correct
17 Correct 24 ms 82576 KB Output is correct
18 Correct 23 ms 82524 KB Output is correct
19 Correct 25 ms 82524 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 22 ms 82536 KB Output is correct
22 Correct 22 ms 82512 KB Output is correct
23 Correct 22 ms 82524 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82532 KB Output is correct
26 Correct 23 ms 82540 KB Output is correct
27 Correct 22 ms 82524 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 22 ms 82524 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 82516 KB Output is correct
2 Correct 29 ms 82432 KB Output is correct
3 Correct 25 ms 82524 KB Output is correct
4 Correct 23 ms 82512 KB Output is correct
5 Correct 23 ms 82524 KB Output is correct
6 Correct 24 ms 82520 KB Output is correct
7 Correct 23 ms 82496 KB Output is correct
8 Correct 25 ms 82480 KB Output is correct
9 Correct 22 ms 82780 KB Output is correct
10 Correct 23 ms 82516 KB Output is correct
11 Correct 22 ms 82524 KB Output is correct
12 Correct 22 ms 82512 KB Output is correct
13 Correct 22 ms 82488 KB Output is correct
14 Correct 24 ms 82532 KB Output is correct
15 Correct 26 ms 82540 KB Output is correct
16 Correct 27 ms 82736 KB Output is correct
17 Correct 24 ms 82576 KB Output is correct
18 Correct 23 ms 82524 KB Output is correct
19 Correct 25 ms 82524 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 22 ms 82536 KB Output is correct
22 Correct 22 ms 82512 KB Output is correct
23 Correct 22 ms 82524 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82532 KB Output is correct
26 Correct 23 ms 82540 KB Output is correct
27 Correct 22 ms 82524 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 22 ms 82524 KB Output is correct
30 Correct 25 ms 82520 KB Output is correct
31 Correct 24 ms 82512 KB Output is correct
32 Correct 25 ms 82512 KB Output is correct
33 Correct 25 ms 82772 KB Output is correct
34 Correct 25 ms 82524 KB Output is correct
35 Correct 25 ms 82712 KB Output is correct
36 Correct 25 ms 82532 KB Output is correct
37 Correct 25 ms 82620 KB Output is correct
38 Correct 73 ms 82780 KB Output is correct
39 Correct 81 ms 82836 KB Output is correct
40 Correct 81 ms 82780 KB Output is correct
41 Correct 95 ms 82852 KB Output is correct
42 Correct 100 ms 83032 KB Output is correct
43 Correct 69 ms 82816 KB Output is correct
44 Correct 52 ms 82780 KB Output is correct
45 Correct 38 ms 82512 KB Output is correct
46 Correct 62 ms 82780 KB Output is correct
47 Correct 49 ms 82664 KB Output is correct
48 Correct 41 ms 82524 KB Output is correct
49 Correct 47 ms 82516 KB Output is correct
50 Correct 23 ms 82524 KB Output is correct
51 Correct 23 ms 82520 KB Output is correct
52 Correct 23 ms 82692 KB Output is correct
53 Correct 24 ms 82564 KB Output is correct
54 Correct 23 ms 82512 KB Output is correct
55 Correct 24 ms 82524 KB Output is correct
56 Correct 22 ms 82524 KB Output is correct
57 Correct 23 ms 82524 KB Output is correct
58 Correct 24 ms 82524 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 82520 KB Output is correct
2 Correct 22 ms 82524 KB Output is correct
3 Correct 23 ms 82516 KB Output is correct
4 Execution timed out 5055 ms 93400 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 82528 KB Output is correct
2 Correct 104 ms 86096 KB Output is correct
3 Correct 134 ms 87152 KB Output is correct
4 Correct 121 ms 87288 KB Output is correct
5 Correct 169 ms 89452 KB Output is correct
6 Correct 186 ms 89424 KB Output is correct
7 Correct 170 ms 89256 KB Output is correct
8 Correct 190 ms 89412 KB Output is correct
9 Correct 168 ms 89404 KB Output is correct
10 Correct 176 ms 89308 KB Output is correct
11 Correct 175 ms 89452 KB Output is correct
12 Correct 184 ms 89428 KB Output is correct
13 Correct 174 ms 89936 KB Output is correct
14 Correct 185 ms 90704 KB Output is correct
15 Correct 217 ms 93864 KB Output is correct
16 Correct 186 ms 89940 KB Output is correct
17 Correct 184 ms 89824 KB Output is correct
18 Correct 177 ms 89932 KB Output is correct
19 Correct 4340 ms 89280 KB Output is correct
20 Correct 4555 ms 89168 KB Output is correct
21 Correct 3041 ms 89412 KB Output is correct
22 Correct 4162 ms 89436 KB Output is correct
23 Correct 3860 ms 89184 KB Output is correct
24 Correct 3442 ms 89192 KB Output is correct
25 Correct 3431 ms 89664 KB Output is correct
26 Execution timed out 5034 ms 89468 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #5
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 82512 KB Output is correct
2 Correct 22 ms 82524 KB Output is correct
3 Correct 24 ms 82504 KB Output is correct
4 Correct 168 ms 88288 KB Output is correct
5 Correct 167 ms 90124 KB Output is correct
6 Correct 187 ms 91988 KB Output is correct
7 Correct 206 ms 93008 KB Output is correct
8 Correct 214 ms 93004 KB Output is correct
9 Correct 213 ms 92864 KB Output is correct
10 Correct 219 ms 92976 KB Output is correct
11 Correct 203 ms 93112 KB Output is correct
12 Correct 219 ms 93116 KB Output is correct
13 Correct 215 ms 93004 KB Output is correct
14 Correct 58 ms 86356 KB Output is correct

Subtask #6
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 82516 KB Output is correct
2 Correct 29 ms 82432 KB Output is correct
3 Correct 25 ms 82524 KB Output is correct
4 Correct 23 ms 82512 KB Output is correct
5 Correct 23 ms 82524 KB Output is correct
6 Correct 24 ms 82520 KB Output is correct
7 Correct 23 ms 82496 KB Output is correct
8 Correct 25 ms 82480 KB Output is correct
9 Correct 22 ms 82780 KB Output is correct
10 Correct 23 ms 82516 KB Output is correct
11 Correct 22 ms 82524 KB Output is correct
12 Correct 22 ms 82512 KB Output is correct
13 Correct 22 ms 82488 KB Output is correct
14 Correct 24 ms 82532 KB Output is correct
15 Correct 26 ms 82540 KB Output is correct
16 Correct 27 ms 82736 KB Output is correct
17 Correct 24 ms 82576 KB Output is correct
18 Correct 23 ms 82524 KB Output is correct
19 Correct 25 ms 82524 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 22 ms 82536 KB Output is correct
22 Correct 22 ms 82512 KB Output is correct
23 Correct 22 ms 82524 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82532 KB Output is correct
26 Correct 23 ms 82540 KB Output is correct
27 Correct 22 ms 82524 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 22 ms 82524 KB Output is correct
30 Correct 25 ms 82520 KB Output is correct
31 Correct 24 ms 82512 KB Output is correct
32 Correct 25 ms 82512 KB Output is correct
33 Correct 25 ms 82772 KB Output is correct
34 Correct 25 ms 82524 KB Output is correct
35 Correct 25 ms 82712 KB Output is correct
36 Correct 25 ms 82532 KB Output is correct
37 Correct 25 ms 82620 KB Output is correct
38 Correct 73 ms 82780 KB Output is correct
39 Correct 81 ms 82836 KB Output is correct
40 Correct 81 ms 82780 KB Output is correct
41 Correct 95 ms 82852 KB Output is correct
42 Correct 100 ms 83032 KB Output is correct
43 Correct 69 ms 82816 KB Output is correct
44 Correct 52 ms 82780 KB Output is correct
45 Correct 38 ms 82512 KB Output is correct
46 Correct 62 ms 82780 KB Output is correct
47 Correct 49 ms 82664 KB Output is correct
48 Correct 41 ms 82524 KB Output is correct
49 Correct 47 ms 82516 KB Output is correct
50 Correct 23 ms 82524 KB Output is correct
51 Correct 23 ms 82520 KB Output is correct
52 Correct 23 ms 82692 KB Output is correct
53 Correct 24 ms 82564 KB Output is correct
54 Correct 23 ms 82512 KB Output is correct
55 Correct 24 ms 82524 KB Output is correct
56 Correct 22 ms 82524 KB Output is correct
57 Correct 23 ms 82524 KB Output is correct
58 Correct 24 ms 82524 KB Output is correct
59 Correct 23 ms 82520 KB Output is correct
60 Correct 22 ms 82524 KB Output is correct
61 Correct 23 ms 82516 KB Output is correct
62 Execution timed out 5055 ms 93400 KB Time limit exceeded
63 Halted 0 ms 0 KB -