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답안 #966107

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
966107 2024-04-19T11:46:19 Z Trisanu_Das Tourism (JOI23_tourism) C++17
100 / 100
 167 ms 100988 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[hd[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,lv[u]-lv[h]+1);
        }
        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";
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 82512 KB Output is correct
2 Correct 24 ms 82480 KB Output is correct
3 Correct 23 ms 82520 KB Output is correct
4 Correct 23 ms 82524 KB Output is correct
5 Correct 22 ms 82472 KB Output is correct
6 Correct 22 ms 82524 KB Output is correct
7 Correct 22 ms 82520 KB Output is correct
8 Correct 22 ms 82512 KB Output is correct
9 Correct 22 ms 82516 KB Output is correct
10 Correct 22 ms 82520 KB Output is correct
11 Correct 23 ms 82300 KB Output is correct
12 Correct 22 ms 82524 KB Output is correct
13 Correct 22 ms 82504 KB Output is correct
14 Correct 22 ms 82524 KB Output is correct
15 Correct 23 ms 82548 KB Output is correct
16 Correct 22 ms 82452 KB Output is correct
17 Correct 22 ms 82524 KB Output is correct
18 Correct 23 ms 82516 KB Output is correct
19 Correct 24 ms 82560 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 23 ms 82536 KB Output is correct
22 Correct 22 ms 82520 KB Output is correct
23 Correct 22 ms 82544 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82444 KB Output is correct
26 Correct 24 ms 82512 KB Output is correct
27 Correct 22 ms 82520 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 23 ms 82520 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 82512 KB Output is correct
2 Correct 24 ms 82480 KB Output is correct
3 Correct 23 ms 82520 KB Output is correct
4 Correct 23 ms 82524 KB Output is correct
5 Correct 22 ms 82472 KB Output is correct
6 Correct 22 ms 82524 KB Output is correct
7 Correct 22 ms 82520 KB Output is correct
8 Correct 22 ms 82512 KB Output is correct
9 Correct 22 ms 82516 KB Output is correct
10 Correct 22 ms 82520 KB Output is correct
11 Correct 23 ms 82300 KB Output is correct
12 Correct 22 ms 82524 KB Output is correct
13 Correct 22 ms 82504 KB Output is correct
14 Correct 22 ms 82524 KB Output is correct
15 Correct 23 ms 82548 KB Output is correct
16 Correct 22 ms 82452 KB Output is correct
17 Correct 22 ms 82524 KB Output is correct
18 Correct 23 ms 82516 KB Output is correct
19 Correct 24 ms 82560 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 23 ms 82536 KB Output is correct
22 Correct 22 ms 82520 KB Output is correct
23 Correct 22 ms 82544 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82444 KB Output is correct
26 Correct 24 ms 82512 KB Output is correct
27 Correct 22 ms 82520 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 23 ms 82520 KB Output is correct
30 Correct 24 ms 82512 KB Output is correct
31 Correct 23 ms 82524 KB Output is correct
32 Correct 24 ms 82720 KB Output is correct
33 Correct 24 ms 82524 KB Output is correct
34 Correct 24 ms 82516 KB Output is correct
35 Correct 24 ms 82516 KB Output is correct
36 Correct 24 ms 82520 KB Output is correct
37 Correct 24 ms 82656 KB Output is correct
38 Correct 24 ms 83040 KB Output is correct
39 Correct 24 ms 82712 KB Output is correct
40 Correct 23 ms 82776 KB Output is correct
41 Correct 23 ms 83016 KB Output is correct
42 Correct 24 ms 82772 KB Output is correct
43 Correct 24 ms 82768 KB Output is correct
44 Correct 23 ms 82724 KB Output is correct
45 Correct 23 ms 82516 KB Output is correct
46 Correct 23 ms 82780 KB Output is correct
47 Correct 23 ms 82520 KB Output is correct
48 Correct 23 ms 82524 KB Output is correct
49 Correct 23 ms 82512 KB Output is correct
50 Correct 24 ms 82512 KB Output is correct
51 Correct 23 ms 82524 KB Output is correct
52 Correct 24 ms 82640 KB Output is correct
53 Correct 23 ms 82516 KB Output is correct
54 Correct 24 ms 82512 KB Output is correct
55 Correct 24 ms 82516 KB Output is correct
56 Correct 23 ms 82524 KB Output is correct
57 Correct 23 ms 82524 KB Output is correct
58 Correct 24 ms 82516 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 82512 KB Output is correct
2 Correct 22 ms 82520 KB Output is correct
3 Correct 23 ms 82524 KB Output is correct
4 Correct 72 ms 93120 KB Output is correct
5 Correct 70 ms 96544 KB Output is correct
6 Correct 74 ms 97988 KB Output is correct
7 Correct 93 ms 100948 KB Output is correct
8 Correct 92 ms 100944 KB Output is correct
9 Correct 94 ms 100988 KB Output is correct
10 Correct 102 ms 100944 KB Output is correct
11 Correct 95 ms 100856 KB Output is correct
12 Correct 78 ms 99920 KB Output is correct
13 Correct 78 ms 99936 KB Output is correct
14 Correct 77 ms 99924 KB Output is correct
15 Correct 61 ms 97476 KB Output is correct
16 Correct 89 ms 100720 KB Output is correct
17 Correct 59 ms 86320 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 82508 KB Output is correct
2 Correct 70 ms 85920 KB Output is correct
3 Correct 88 ms 86608 KB Output is correct
4 Correct 79 ms 86752 KB Output is correct
5 Correct 108 ms 88404 KB Output is correct
6 Correct 109 ms 88468 KB Output is correct
7 Correct 107 ms 88412 KB Output is correct
8 Correct 106 ms 88468 KB Output is correct
9 Correct 106 ms 88404 KB Output is correct
10 Correct 108 ms 88404 KB Output is correct
11 Correct 106 ms 88536 KB Output is correct
12 Correct 111 ms 88592 KB Output is correct
13 Correct 109 ms 89168 KB Output is correct
14 Correct 116 ms 89748 KB Output is correct
15 Correct 132 ms 92500 KB Output is correct
16 Correct 107 ms 89172 KB Output is correct
17 Correct 115 ms 89056 KB Output is correct
18 Correct 123 ms 89068 KB Output is correct
19 Correct 88 ms 87268 KB Output is correct
20 Correct 86 ms 87376 KB Output is correct
21 Correct 86 ms 87380 KB Output is correct
22 Correct 85 ms 87376 KB Output is correct
23 Correct 82 ms 87292 KB Output is correct
24 Correct 86 ms 87260 KB Output is correct
25 Correct 90 ms 87312 KB Output is correct
26 Correct 87 ms 87472 KB Output is correct
27 Correct 85 ms 87376 KB Output is correct
28 Correct 85 ms 87232 KB Output is correct
29 Correct 86 ms 87380 KB Output is correct
30 Correct 89 ms 87636 KB Output is correct
31 Correct 89 ms 87892 KB Output is correct
32 Correct 93 ms 88400 KB Output is correct
33 Correct 102 ms 89164 KB Output is correct
34 Correct 112 ms 91384 KB Output is correct

Subtask #5
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 82524 KB Output is correct
2 Correct 23 ms 82544 KB Output is correct
3 Correct 23 ms 82524 KB Output is correct
4 Correct 127 ms 89128 KB Output is correct
5 Correct 130 ms 89172 KB Output is correct
6 Correct 155 ms 91052 KB Output is correct
7 Correct 153 ms 91832 KB Output is correct
8 Correct 152 ms 91728 KB Output is correct
9 Correct 167 ms 91976 KB Output is correct
10 Correct 154 ms 91908 KB Output is correct
11 Correct 159 ms 91732 KB Output is correct
12 Correct 151 ms 91732 KB Output is correct
13 Correct 154 ms 91928 KB Output is correct
14 Correct 58 ms 86100 KB Output is correct

Subtask #6
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 82512 KB Output is correct
2 Correct 24 ms 82480 KB Output is correct
3 Correct 23 ms 82520 KB Output is correct
4 Correct 23 ms 82524 KB Output is correct
5 Correct 22 ms 82472 KB Output is correct
6 Correct 22 ms 82524 KB Output is correct
7 Correct 22 ms 82520 KB Output is correct
8 Correct 22 ms 82512 KB Output is correct
9 Correct 22 ms 82516 KB Output is correct
10 Correct 22 ms 82520 KB Output is correct
11 Correct 23 ms 82300 KB Output is correct
12 Correct 22 ms 82524 KB Output is correct
13 Correct 22 ms 82504 KB Output is correct
14 Correct 22 ms 82524 KB Output is correct
15 Correct 23 ms 82548 KB Output is correct
16 Correct 22 ms 82452 KB Output is correct
17 Correct 22 ms 82524 KB Output is correct
18 Correct 23 ms 82516 KB Output is correct
19 Correct 24 ms 82560 KB Output is correct
20 Correct 23 ms 82524 KB Output is correct
21 Correct 23 ms 82536 KB Output is correct
22 Correct 22 ms 82520 KB Output is correct
23 Correct 22 ms 82544 KB Output is correct
24 Correct 22 ms 82524 KB Output is correct
25 Correct 23 ms 82444 KB Output is correct
26 Correct 24 ms 82512 KB Output is correct
27 Correct 22 ms 82520 KB Output is correct
28 Correct 22 ms 82524 KB Output is correct
29 Correct 23 ms 82520 KB Output is correct
30 Correct 24 ms 82512 KB Output is correct
31 Correct 23 ms 82524 KB Output is correct
32 Correct 24 ms 82720 KB Output is correct
33 Correct 24 ms 82524 KB Output is correct
34 Correct 24 ms 82516 KB Output is correct
35 Correct 24 ms 82516 KB Output is correct
36 Correct 24 ms 82520 KB Output is correct
37 Correct 24 ms 82656 KB Output is correct
38 Correct 24 ms 83040 KB Output is correct
39 Correct 24 ms 82712 KB Output is correct
40 Correct 23 ms 82776 KB Output is correct
41 Correct 23 ms 83016 KB Output is correct
42 Correct 24 ms 82772 KB Output is correct
43 Correct 24 ms 82768 KB Output is correct
44 Correct 23 ms 82724 KB Output is correct
45 Correct 23 ms 82516 KB Output is correct
46 Correct 23 ms 82780 KB Output is correct
47 Correct 23 ms 82520 KB Output is correct
48 Correct 23 ms 82524 KB Output is correct
49 Correct 23 ms 82512 KB Output is correct
50 Correct 24 ms 82512 KB Output is correct
51 Correct 23 ms 82524 KB Output is correct
52 Correct 24 ms 82640 KB Output is correct
53 Correct 23 ms 82516 KB Output is correct
54 Correct 24 ms 82512 KB Output is correct
55 Correct 24 ms 82516 KB Output is correct
56 Correct 23 ms 82524 KB Output is correct
57 Correct 23 ms 82524 KB Output is correct
58 Correct 24 ms 82516 KB Output is correct
59 Correct 22 ms 82512 KB Output is correct
60 Correct 22 ms 82520 KB Output is correct
61 Correct 23 ms 82524 KB Output is correct
62 Correct 72 ms 93120 KB Output is correct
63 Correct 70 ms 96544 KB Output is correct
64 Correct 74 ms 97988 KB Output is correct
65 Correct 93 ms 100948 KB Output is correct
66 Correct 92 ms 100944 KB Output is correct
67 Correct 94 ms 100988 KB Output is correct
68 Correct 102 ms 100944 KB Output is correct
69 Correct 95 ms 100856 KB Output is correct
70 Correct 78 ms 99920 KB Output is correct
71 Correct 78 ms 99936 KB Output is correct
72 Correct 77 ms 99924 KB Output is correct
73 Correct 61 ms 97476 KB Output is correct
74 Correct 89 ms 100720 KB Output is correct
75 Correct 59 ms 86320 KB Output is correct
76 Correct 22 ms 82508 KB Output is correct
77 Correct 70 ms 85920 KB Output is correct
78 Correct 88 ms 86608 KB Output is correct
79 Correct 79 ms 86752 KB Output is correct
80 Correct 108 ms 88404 KB Output is correct
81 Correct 109 ms 88468 KB Output is correct
82 Correct 107 ms 88412 KB Output is correct
83 Correct 106 ms 88468 KB Output is correct
84 Correct 106 ms 88404 KB Output is correct
85 Correct 108 ms 88404 KB Output is correct
86 Correct 106 ms 88536 KB Output is correct
87 Correct 111 ms 88592 KB Output is correct
88 Correct 109 ms 89168 KB Output is correct
89 Correct 116 ms 89748 KB Output is correct
90 Correct 132 ms 92500 KB Output is correct
91 Correct 107 ms 89172 KB Output is correct
92 Correct 115 ms 89056 KB Output is correct
93 Correct 123 ms 89068 KB Output is correct
94 Correct 88 ms 87268 KB Output is correct
95 Correct 86 ms 87376 KB Output is correct
96 Correct 86 ms 87380 KB Output is correct
97 Correct 85 ms 87376 KB Output is correct
98 Correct 82 ms 87292 KB Output is correct
99 Correct 86 ms 87260 KB Output is correct
100 Correct 90 ms 87312 KB Output is correct
101 Correct 87 ms 87472 KB Output is correct
102 Correct 85 ms 87376 KB Output is correct
103 Correct 85 ms 87232 KB Output is correct
104 Correct 86 ms 87380 KB Output is correct
105 Correct 89 ms 87636 KB Output is correct
106 Correct 89 ms 87892 KB Output is correct
107 Correct 93 ms 88400 KB Output is correct
108 Correct 102 ms 89164 KB Output is correct
109 Correct 112 ms 91384 KB Output is correct
110 Correct 22 ms 82524 KB Output is correct
111 Correct 23 ms 82544 KB Output is correct
112 Correct 23 ms 82524 KB Output is correct
113 Correct 127 ms 89128 KB Output is correct
114 Correct 130 ms 89172 KB Output is correct
115 Correct 155 ms 91052 KB Output is correct
116 Correct 153 ms 91832 KB Output is correct
117 Correct 152 ms 91728 KB Output is correct
118 Correct 167 ms 91976 KB Output is correct
119 Correct 154 ms 91908 KB Output is correct
120 Correct 159 ms 91732 KB Output is correct
121 Correct 151 ms 91732 KB Output is correct
122 Correct 154 ms 91928 KB Output is correct
123 Correct 58 ms 86100 KB Output is correct
124 Correct 129 ms 92496 KB Output is correct
125 Correct 110 ms 90544 KB Output is correct
126 Correct 141 ms 92932 KB Output is correct
127 Correct 141 ms 92804 KB Output is correct
128 Correct 151 ms 92820 KB Output is correct
129 Correct 138 ms 92980 KB Output is correct
130 Correct 140 ms 93028 KB Output is correct
131 Correct 105 ms 99356 KB Output is correct
132 Correct 103 ms 100692 KB Output is correct
133 Correct 100 ms 96292 KB Output is correct
134 Correct 126 ms 91712 KB Output is correct
135 Correct 118 ms 91888 KB Output is correct
136 Correct 119 ms 91728 KB Output is correct
137 Correct 102 ms 93936 KB Output is correct
138 Correct 98 ms 93984 KB Output is correct
139 Correct 106 ms 94156 KB Output is correct
140 Correct 98 ms 93900 KB Output is correct
141 Correct 97 ms 93764 KB Output is correct
142 Correct 106 ms 93792 KB Output is correct
143 Correct 65 ms 88228 KB Output is correct
144 Correct 139 ms 92756 KB Output is correct