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답안 #1095380

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1095380 2024-10-02T02:52:42 Z abcvuitunggio Cat Exercise (JOI23_ho_t4) C++17
100 / 100
 307 ms 77652 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int n,h[200001],p[200001][20],d[200001],pos[200001],l[200001],u,v,mx[200001],res;
vector <int> ke[200001],ke2[200001];
void dfs(int u, int par){
    for (int v:ke[u])
        if (v!=par){
            p[v][0]=u;
            for (int i=1;i<20;i++)
                p[v][i]=p[p[v][i-1]][i-1];
            d[v]=d[u]+1;
            dfs(v,u);
        }
}
int lca(int u, int v){
    if (d[u]<d[v])
        swap(u,v);
    for (int i=19;i>=0;i--)
        if (d[p[u][i]]>=d[v])
            u=p[u][i];
    if (u==v)
        return u;
    for (int i=19;i>=0;i--)
        if (p[u][i]!=p[v][i]){
            u=p[u][i];
            v=p[v][i];
        }
    return p[u][0];
}
int dist(int u, int v){
    return d[u]+d[v]-d[lca(u,v)]*2;
}
int f(int i){
    return (l[i]==i?i:l[i]=f(l[i]));
}
void unite(int i, int j){
    i=f(i),j=f(j);
    l[i]=j;
    mx[j]=max(mx[i],mx[j]);
}
void dfs2(int u, int val){
    res=max(res,val);
    for (int v:ke2[u])
        dfs2(v,val+dist(u,v));
}
int32_t main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n;
    for (int i=1;i<=n;i++){
        cin >> h[i];
        pos[h[i]]=i;
        l[i]=i;
        mx[i]=h[i];
    }
    for (int i=1;i<n;i++){
        cin >> u >> v;
        ke[u].push_back(v);
        ke[v].push_back(u);
    }
    dfs(pos[n],0);
    for (int i=1;i<=n;i++){
        int u=pos[i];
        for (int j:ke[u])
            if (h[j]<h[u]){
                int v=pos[mx[f(j)]];
                ke2[u].push_back(v);
                unite(u,j);
            }
    }
    dfs2(pos[n],0);
    cout << res;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct
11 Correct 4 ms 9820 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9988 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct
11 Correct 4 ms 9820 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9988 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 6 ms 11356 KB Output is correct
19 Correct 6 ms 11356 KB Output is correct
20 Correct 8 ms 11356 KB Output is correct
21 Correct 6 ms 11352 KB Output is correct
22 Correct 6 ms 11356 KB Output is correct
23 Correct 6 ms 11372 KB Output is correct
24 Correct 6 ms 11156 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct
11 Correct 4 ms 9820 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9988 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 6 ms 11356 KB Output is correct
19 Correct 6 ms 11356 KB Output is correct
20 Correct 8 ms 11356 KB Output is correct
21 Correct 6 ms 11352 KB Output is correct
22 Correct 6 ms 11356 KB Output is correct
23 Correct 6 ms 11372 KB Output is correct
24 Correct 6 ms 11156 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 9 ms 11356 KB Output is correct
27 Correct 7 ms 11356 KB Output is correct
28 Correct 8 ms 11356 KB Output is correct
29 Correct 9 ms 11356 KB Output is correct
30 Correct 7 ms 11052 KB Output is correct
31 Correct 7 ms 11096 KB Output is correct
32 Correct 7 ms 11100 KB Output is correct
33 Correct 7 ms 11100 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct
11 Correct 4 ms 9820 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9988 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 6 ms 11356 KB Output is correct
19 Correct 6 ms 11356 KB Output is correct
20 Correct 8 ms 11356 KB Output is correct
21 Correct 6 ms 11352 KB Output is correct
22 Correct 6 ms 11356 KB Output is correct
23 Correct 6 ms 11372 KB Output is correct
24 Correct 6 ms 11156 KB Output is correct
25 Correct 118 ms 77652 KB Output is correct
26 Correct 134 ms 77140 KB Output is correct
27 Correct 134 ms 77140 KB Output is correct
28 Correct 141 ms 72532 KB Output is correct
29 Correct 144 ms 74064 KB Output is correct
30 Correct 150 ms 73812 KB Output is correct
31 Correct 152 ms 74320 KB Output is correct

Subtask #6
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9820 KB Output is correct
2 Correct 4 ms 9864 KB Output is correct
3 Correct 148 ms 65424 KB Output is correct
4 Correct 153 ms 65364 KB Output is correct
5 Correct 157 ms 65360 KB Output is correct

Subtask #7
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9820 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 5 ms 9820 KB Output is correct
7 Correct 4 ms 9816 KB Output is correct
8 Correct 4 ms 9892 KB Output is correct
9 Correct 4 ms 9820 KB Output is correct
10 Correct 4 ms 9660 KB Output is correct
11 Correct 4 ms 9820 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9988 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 6 ms 11356 KB Output is correct
19 Correct 6 ms 11356 KB Output is correct
20 Correct 8 ms 11356 KB Output is correct
21 Correct 6 ms 11352 KB Output is correct
22 Correct 6 ms 11356 KB Output is correct
23 Correct 6 ms 11372 KB Output is correct
24 Correct 6 ms 11156 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 9 ms 11356 KB Output is correct
27 Correct 7 ms 11356 KB Output is correct
28 Correct 8 ms 11356 KB Output is correct
29 Correct 9 ms 11356 KB Output is correct
30 Correct 7 ms 11052 KB Output is correct
31 Correct 7 ms 11096 KB Output is correct
32 Correct 7 ms 11100 KB Output is correct
33 Correct 7 ms 11100 KB Output is correct
34 Correct 118 ms 77652 KB Output is correct
35 Correct 134 ms 77140 KB Output is correct
36 Correct 134 ms 77140 KB Output is correct
37 Correct 141 ms 72532 KB Output is correct
38 Correct 144 ms 74064 KB Output is correct
39 Correct 150 ms 73812 KB Output is correct
40 Correct 152 ms 74320 KB Output is correct
41 Correct 4 ms 9820 KB Output is correct
42 Correct 4 ms 9864 KB Output is correct
43 Correct 148 ms 65424 KB Output is correct
44 Correct 153 ms 65364 KB Output is correct
45 Correct 157 ms 65360 KB Output is correct
46 Correct 307 ms 73580 KB Output is correct
47 Correct 266 ms 73576 KB Output is correct
48 Correct 279 ms 74840 KB Output is correct
49 Correct 301 ms 73552 KB Output is correct
50 Correct 227 ms 64344 KB Output is correct
51 Correct 211 ms 64336 KB Output is correct
52 Correct 220 ms 64336 KB Output is correct
53 Correct 245 ms 64452 KB Output is correct