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Submission #850805

# Submission time Handle Problem Language Result Execution time Memory
850805 2023-09-17T13:19:34 Z kderylo Railway (BOI17_railway) C++17
100 / 100
 110 ms 30460 KB 
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
const int stala=1e5+10;
vector<int>w[stala];
vector<int>w2[stala];
vector<pair<int,int> >pom;
vector<int>result;
int nr[stala];
int postorder[stala];
int gl[stala];
int jump[stala][17];
int dp[stala];
int l=0;
void dfs(int k,int p)
{
    jump[k][0]=p;
    for(int i=0;i<(int)w[k].size();i++){
        if(w[k][i]!=p){
            gl[w[k][i]]=gl[k]+1;
            dfs(w[k][i],k);
        }
        nr[w[k][i]]=w2[k][i];
    }
    l++;
    postorder[k]=l;
}
void pre_lca(int ile)
{
    for(int i=1;i<=16;i++){
        for(int j=1;j<=ile;j++){
            jump[j][i]=jump[jump[j][i-1]][i-1];
        }
    }
}
int lca(int x,int y)
{
    if(gl[y]>gl[x]){
        swap(x,y);
    }
    for(int i=16;i>=0;i--){
        if(gl[jump[x][i]]>=gl[y]){
            x=jump[x][i];
        }
    }
    if(x==y){
        return x;
    }
    for(int i=16;i>=0;i--){
        if(jump[x][i]!=jump[y][i]){
            x=jump[x][i];
            y=jump[y][i];
        }
    }
    return jump[x][0];
}
void func()
{
    int all_lca=pom[0].second;
    dp[pom[0].second]++;
    for(int i=1;i<(int)pom.size();i++){
        all_lca=lca(all_lca,pom[i].second);
        dp[pom[i].second]++;
        int x=lca(pom[i-1].second,pom[i].second);
        dp[x]--;
    }
    dp[all_lca]--;
}
void final_dfs(int k,int p,int wsp)
{
    for(int i=0;i<(int)w[k].size();i++){
        if(w[k][i]!=p){
            final_dfs(w[k][i],k,wsp);
            dp[k]+=dp[w[k][i]];
        }
    }
    if(dp[k]>=wsp){
        result.push_back(nr[k]);
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int ile,m,k;
    cin>>ile>>m>>k;
    for(int i=1;i<ile;i++){
        int a,b;
        cin>>a>>b;
        w[a].push_back(b);
        w[b].push_back(a);
        w2[a].push_back(i);
        w2[b].push_back(i);
    }
    gl[1]=1;
    dfs(1,1);
    pre_lca(ile);
    for(int i=1;i<=m;i++){
        pom.clear();
        int il;
        cin>>il;
        for(int j=1;j<=il;j++){
            int a;
            cin>>a;
            pom.push_back({postorder[a],a});
        }
        sort(pom.begin(),pom.end());
        func();
    }
    final_dfs(1,0,k);
    sort(result.begin(),result.end());
    cout<<(int)result.size()<<"\n";
    for(int i=0;i<(int)result.size();i++){
        cout<<result[i]<<" ";
    }

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 5 ms 9816 KB Output is correct
3 Correct 5 ms 9816 KB Output is correct
4 Correct 2 ms 9048 KB Output is correct
5 Correct 2 ms 9052 KB Output is correct
6 Correct 6 ms 10132 KB Output is correct
7 Correct 6 ms 9820 KB Output is correct
8 Correct 5 ms 10072 KB Output is correct
9 Correct 4 ms 9816 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 5 ms 9816 KB Output is correct
3 Correct 5 ms 9816 KB Output is correct
4 Correct 2 ms 9048 KB Output is correct
5 Correct 2 ms 9052 KB Output is correct
6 Correct 6 ms 10132 KB Output is correct
7 Correct 6 ms 9820 KB Output is correct
8 Correct 5 ms 10072 KB Output is correct
9 Correct 4 ms 9816 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 25 ms 10424 KB Output is correct
16 Correct 27 ms 10156 KB Output is correct
17 Correct 25 ms 10332 KB Output is correct
18 Correct 9 ms 10328 KB Output is correct
19 Correct 7 ms 9816 KB Output is correct
20 Correct 30 ms 10388 KB Output is correct
21 Correct 31 ms 10360 KB Output is correct
22 Correct 2 ms 9048 KB Output is correct
23 Correct 6 ms 9816 KB Output is correct
24 Correct 7 ms 9816 KB Output is correct
25 Correct 2 ms 9052 KB Output is correct
26 Correct 2 ms 9048 KB Output is correct
27 Correct 6 ms 10328 KB Output is correct
28 Correct 5 ms 9816 KB Output is correct
29 Correct 4 ms 9820 KB Output is correct
30 Correct 5 ms 9816 KB Output is correct
31 Correct 2 ms 9052 KB Output is correct
32 Correct 2 ms 9052 KB Output is correct
33 Correct 3 ms 9048 KB Output is correct
34 Correct 2 ms 9048 KB Output is correct
35 Correct 2 ms 9052 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 30108 KB Output is correct
2 Correct 2 ms 9048 KB Output is correct
3 Correct 66 ms 29768 KB Output is correct
4 Correct 110 ms 29220 KB Output is correct
5 Correct 80 ms 29996 KB Output is correct
6 Correct 82 ms 30408 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 25168 KB Output is correct
2 Correct 66 ms 21840 KB Output is correct
3 Correct 87 ms 21612 KB Output is correct
4 Correct 81 ms 21436 KB Output is correct
5 Correct 90 ms 21620 KB Output is correct
6 Correct 67 ms 25424 KB Output is correct
7 Correct 61 ms 25424 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 25168 KB Output is correct
2 Correct 66 ms 21840 KB Output is correct
3 Correct 87 ms 21612 KB Output is correct
4 Correct 81 ms 21436 KB Output is correct
5 Correct 90 ms 21620 KB Output is correct
6 Correct 67 ms 25424 KB Output is correct
7 Correct 61 ms 25424 KB Output is correct
8 Correct 71 ms 25500 KB Output is correct
9 Correct 79 ms 25748 KB Output is correct
10 Correct 80 ms 30156 KB Output is correct
11 Correct 72 ms 30016 KB Output is correct
12 Correct 65 ms 21748 KB Output is correct
13 Correct 65 ms 21604 KB Output is correct
14 Correct 87 ms 21540 KB Output is correct
15 Correct 102 ms 21356 KB Output is correct
16 Correct 67 ms 21596 KB Output is correct
17 Correct 75 ms 21624 KB Output is correct
18 Correct 78 ms 21624 KB Output is correct
19 Correct 80 ms 21900 KB Output is correct
20 Correct 74 ms 25696 KB Output is correct
21 Correct 70 ms 25656 KB Output is correct
22 Correct 69 ms 25684 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9048 KB Output is correct
2 Correct 5 ms 9816 KB Output is correct
3 Correct 5 ms 9816 KB Output is correct
4 Correct 2 ms 9048 KB Output is correct
5 Correct 2 ms 9052 KB Output is correct
6 Correct 6 ms 10132 KB Output is correct
7 Correct 6 ms 9820 KB Output is correct
8 Correct 5 ms 10072 KB Output is correct
9 Correct 4 ms 9816 KB Output is correct
10 Correct 2 ms 9048 KB Output is correct
11 Correct 2 ms 9048 KB Output is correct
12 Correct 2 ms 9052 KB Output is correct
13 Correct 2 ms 9048 KB Output is correct
14 Correct 2 ms 9048 KB Output is correct
15 Correct 25 ms 10424 KB Output is correct
16 Correct 27 ms 10156 KB Output is correct
17 Correct 25 ms 10332 KB Output is correct
18 Correct 9 ms 10328 KB Output is correct
19 Correct 7 ms 9816 KB Output is correct
20 Correct 30 ms 10388 KB Output is correct
21 Correct 31 ms 10360 KB Output is correct
22 Correct 2 ms 9048 KB Output is correct
23 Correct 6 ms 9816 KB Output is correct
24 Correct 7 ms 9816 KB Output is correct
25 Correct 2 ms 9052 KB Output is correct
26 Correct 2 ms 9048 KB Output is correct
27 Correct 6 ms 10328 KB Output is correct
28 Correct 5 ms 9816 KB Output is correct
29 Correct 4 ms 9820 KB Output is correct
30 Correct 5 ms 9816 KB Output is correct
31 Correct 2 ms 9052 KB Output is correct
32 Correct 2 ms 9052 KB Output is correct
33 Correct 3 ms 9048 KB Output is correct
34 Correct 2 ms 9048 KB Output is correct
35 Correct 2 ms 9052 KB Output is correct
36 Correct 67 ms 30108 KB Output is correct
37 Correct 2 ms 9048 KB Output is correct
38 Correct 66 ms 29768 KB Output is correct
39 Correct 110 ms 29220 KB Output is correct
40 Correct 80 ms 29996 KB Output is correct
41 Correct 82 ms 30408 KB Output is correct
42 Correct 62 ms 25168 KB Output is correct
43 Correct 66 ms 21840 KB Output is correct
44 Correct 87 ms 21612 KB Output is correct
45 Correct 81 ms 21436 KB Output is correct
46 Correct 90 ms 21620 KB Output is correct
47 Correct 67 ms 25424 KB Output is correct
48 Correct 61 ms 25424 KB Output is correct
49 Correct 71 ms 25500 KB Output is correct
50 Correct 79 ms 25748 KB Output is correct
51 Correct 80 ms 30156 KB Output is correct
52 Correct 72 ms 30016 KB Output is correct
53 Correct 65 ms 21748 KB Output is correct
54 Correct 65 ms 21604 KB Output is correct
55 Correct 87 ms 21540 KB Output is correct
56 Correct 102 ms 21356 KB Output is correct
57 Correct 67 ms 21596 KB Output is correct
58 Correct 75 ms 21624 KB Output is correct
59 Correct 78 ms 21624 KB Output is correct
60 Correct 80 ms 21900 KB Output is correct
61 Correct 74 ms 25696 KB Output is correct
62 Correct 70 ms 25656 KB Output is correct
63 Correct 69 ms 25684 KB Output is correct
64 Correct 71 ms 25660 KB Output is correct
65 Correct 89 ms 21384 KB Output is correct
66 Correct 102 ms 21328 KB Output is correct
67 Correct 110 ms 21560 KB Output is correct
68 Correct 59 ms 21584 KB Output is correct
69 Correct 78 ms 21584 KB Output is correct
70 Correct 75 ms 25804 KB Output is correct
71 Correct 80 ms 25172 KB Output is correct
72 Correct 3 ms 9048 KB Output is correct
73 Correct 7 ms 9816 KB Output is correct
74 Correct 5 ms 9816 KB Output is correct
75 Correct 2 ms 9048 KB Output is correct
76 Correct 2 ms 9048 KB Output is correct
77 Correct 6 ms 10332 KB Output is correct
78 Correct 6 ms 9816 KB Output is correct
79 Correct 4 ms 10072 KB Output is correct
80 Correct 7 ms 9816 KB Output is correct
81 Correct 2 ms 9048 KB Output is correct
82 Correct 2 ms 9048 KB Output is correct
83 Correct 2 ms 9048 KB Output is correct
84 Correct 2 ms 9048 KB Output is correct
85 Correct 2 ms 9048 KB Output is correct
86 Correct 34 ms 10232 KB Output is correct
87 Correct 26 ms 10072 KB Output is correct
88 Correct 30 ms 10232 KB Output is correct
89 Correct 8 ms 10328 KB Output is correct
90 Correct 6 ms 9816 KB Output is correct
91 Correct 28 ms 10328 KB Output is correct
92 Correct 31 ms 10320 KB Output is correct
93 Correct 2 ms 9048 KB Output is correct
94 Correct 70 ms 30104 KB Output is correct
95 Correct 67 ms 29644 KB Output is correct
96 Correct 85 ms 29096 KB Output is correct
97 Correct 75 ms 30148 KB Output is correct
98 Correct 95 ms 30460 KB Output is correct
99 Correct 73 ms 21520 KB Output is correct
100 Correct 84 ms 21612 KB Output is correct
101 Correct 73 ms 21624 KB Output is correct
102 Correct 65 ms 21852 KB Output is correct
103 Correct 78 ms 25304 KB Output is correct
104 Correct 67 ms 25836 KB Output is correct
105 Correct 61 ms 25428 KB Output is correct
106 Correct 82 ms 25604 KB Output is correct
107 Correct 81 ms 25424 KB Output is correct
108 Correct 89 ms 30152 KB Output is correct
109 Correct 103 ms 30196 KB Output is correct
110 Correct 69 ms 21856 KB Output is correct
111 Correct 70 ms 21844 KB Output is correct
112 Correct 73 ms 21328 KB Output is correct
113 Correct 84 ms 21332 KB Output is correct