oj.uz

Submission #826807

# Submission time Handle Problem Language Result Execution time Memory
826807 2023-08-16T04:30:18 Z 8pete8 Railway (BOI17_railway) C++14
100 / 100
 111 ms 47684 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<algorithm>
#include<limits.h>
#include<cmath>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<pii,int>
#define pb push_back
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
//#define int long long
#define mod 1000000007
#define int long long
const int mxn=1e5,lg=20,inf=1e18;
vector<pii>e,adj[mxn+10];
int h[mxn+10],up[mxn+10][lg+10],add[mxn+10],ans[mxn+10],st[mxn+10];
bitset<mxn+10>vis;
int t=0;
 
void solve(int cur,int p){
    st[cur]=t++;
    for(auto i:adj[cur]){
        if(i.f==p)continue;
        up[i.f][0]=cur;
        h[i.f]=h[cur]+1;
        solve(i.f,cur);
    }
}
int push(int cur,int p){
    int cnt=add[cur],g;
    for(auto i:adj[cur]){
        if(i.f==p)continue;
        g=push(i.f,cur);
        ans[i.s]+=g;
        cnt+=g;
    }
    return cnt;
}
bool cmp(int a,int b){return st[a]>st[b];}
int lca(int a,int b){
    if(h[a]<h[b])swap(a,b);
    int k=h[a]-h[b];
    for(int i=0;i<=lg;i++)if(k&(1<<i))a=up[a][i];
    if(a==b)return a;
    for(int i=lg;i>=0;i--)if(up[a][i]!=up[b][i])a=up[a][i],b=up[b][i];
    return up[a][0];
}

int32_t main(){
    fastio
    int n,m,k;cin>>n>>m>>k;
    for(int i=0;i<n-1;i++){
        int u,v;cin>>u>>v;
        adj[u].pb({v,i});
        adj[v].pb({u,i});
        e.pb({u,v});
    }
    solve(1,-1);
    for(int i=1;i<=lg;i++)for(int j=1;j<=n;j++)up[j][i]=up[up[j][i-1]][i-1];
    while(m--){
        int a;cin>>a;
        vector<int>an(a);
        vis.reset();
        for(int i=0;i<a;i++)cin>>an[i];
        sort(an.begin(),an.end(),cmp);
        int node;
        for(int i=0;i<a;i++){
            node=lca(an[i],an[(i+1)%a]);
            add[node]-=2;
            add[an[i]]++;
            add[an[(i+1)%a]]++;
        }
    }
    push(1,-1);
    vector<int>v;
    for(int i=0;i<n-1;i++)if(ans[i]>=2*k)v.pb(i+1);
    cout<<v.size()<<'\n';
    for(auto i:v)cout<<i<<" ";
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 5 ms 5948 KB Output is correct
3 Correct 6 ms 6096 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 6 ms 6664 KB Output is correct
7 Correct 5 ms 6224 KB Output is correct
8 Correct 5 ms 6096 KB Output is correct
9 Correct 5 ms 6148 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2680 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 5 ms 5948 KB Output is correct
3 Correct 6 ms 6096 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 6 ms 6664 KB Output is correct
7 Correct 5 ms 6224 KB Output is correct
8 Correct 5 ms 6096 KB Output is correct
9 Correct 5 ms 6148 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2680 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 19 ms 6436 KB Output is correct
16 Correct 20 ms 6524 KB Output is correct
17 Correct 21 ms 6564 KB Output is correct
18 Correct 6 ms 6608 KB Output is correct
19 Correct 6 ms 6148 KB Output is correct
20 Correct 27 ms 6608 KB Output is correct
21 Correct 30 ms 6564 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 5 ms 6096 KB Output is correct
24 Correct 7 ms 6144 KB Output is correct
25 Correct 1 ms 2688 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 8 ms 6608 KB Output is correct
28 Correct 5 ms 6224 KB Output is correct
29 Correct 7 ms 6096 KB Output is correct
30 Correct 5 ms 6096 KB Output is correct
31 Correct 2 ms 2680 KB Output is correct
32 Correct 2 ms 2664 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 45392 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 103 ms 46328 KB Output is correct
4 Correct 89 ms 45124 KB Output is correct
5 Correct 99 ms 47296 KB Output is correct
6 Correct 78 ms 47684 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 39444 KB Output is correct
2 Correct 101 ms 36240 KB Output is correct
3 Correct 100 ms 35924 KB Output is correct
4 Correct 87 ms 35920 KB Output is correct
5 Correct 84 ms 35976 KB Output is correct
6 Correct 76 ms 39676 KB Output is correct
7 Correct 73 ms 39608 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 39444 KB Output is correct
2 Correct 101 ms 36240 KB Output is correct
3 Correct 100 ms 35924 KB Output is correct
4 Correct 87 ms 35920 KB Output is correct
5 Correct 84 ms 35976 KB Output is correct
6 Correct 76 ms 39676 KB Output is correct
7 Correct 73 ms 39608 KB Output is correct
8 Correct 84 ms 40072 KB Output is correct
9 Correct 90 ms 41888 KB Output is correct
10 Correct 78 ms 47432 KB Output is correct
11 Correct 111 ms 47328 KB Output is correct
12 Correct 70 ms 36936 KB Output is correct
13 Correct 70 ms 36928 KB Output is correct
14 Correct 79 ms 37640 KB Output is correct
15 Correct 81 ms 37616 KB Output is correct
16 Correct 88 ms 37688 KB Output is correct
17 Correct 85 ms 37772 KB Output is correct
18 Correct 88 ms 37748 KB Output is correct
19 Correct 79 ms 38072 KB Output is correct
20 Correct 78 ms 41788 KB Output is correct
21 Correct 76 ms 42252 KB Output is correct
22 Correct 75 ms 41856 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 5 ms 5948 KB Output is correct
3 Correct 6 ms 6096 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 6 ms 6664 KB Output is correct
7 Correct 5 ms 6224 KB Output is correct
8 Correct 5 ms 6096 KB Output is correct
9 Correct 5 ms 6148 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2680 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 19 ms 6436 KB Output is correct
16 Correct 20 ms 6524 KB Output is correct
17 Correct 21 ms 6564 KB Output is correct
18 Correct 6 ms 6608 KB Output is correct
19 Correct 6 ms 6148 KB Output is correct
20 Correct 27 ms 6608 KB Output is correct
21 Correct 30 ms 6564 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 5 ms 6096 KB Output is correct
24 Correct 7 ms 6144 KB Output is correct
25 Correct 1 ms 2688 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 8 ms 6608 KB Output is correct
28 Correct 5 ms 6224 KB Output is correct
29 Correct 7 ms 6096 KB Output is correct
30 Correct 5 ms 6096 KB Output is correct
31 Correct 2 ms 2680 KB Output is correct
32 Correct 2 ms 2664 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 91 ms 45392 KB Output is correct
37 Correct 1 ms 2644 KB Output is correct
38 Correct 103 ms 46328 KB Output is correct
39 Correct 89 ms 45124 KB Output is correct
40 Correct 99 ms 47296 KB Output is correct
41 Correct 78 ms 47684 KB Output is correct
42 Correct 87 ms 39444 KB Output is correct
43 Correct 101 ms 36240 KB Output is correct
44 Correct 100 ms 35924 KB Output is correct
45 Correct 87 ms 35920 KB Output is correct
46 Correct 84 ms 35976 KB Output is correct
47 Correct 76 ms 39676 KB Output is correct
48 Correct 73 ms 39608 KB Output is correct
49 Correct 84 ms 40072 KB Output is correct
50 Correct 90 ms 41888 KB Output is correct
51 Correct 78 ms 47432 KB Output is correct
52 Correct 111 ms 47328 KB Output is correct
53 Correct 70 ms 36936 KB Output is correct
54 Correct 70 ms 36928 KB Output is correct
55 Correct 79 ms 37640 KB Output is correct
56 Correct 81 ms 37616 KB Output is correct
57 Correct 88 ms 37688 KB Output is correct
58 Correct 85 ms 37772 KB Output is correct
59 Correct 88 ms 37748 KB Output is correct
60 Correct 79 ms 38072 KB Output is correct
61 Correct 78 ms 41788 KB Output is correct
62 Correct 76 ms 42252 KB Output is correct
63 Correct 75 ms 41856 KB Output is correct
64 Correct 82 ms 42112 KB Output is correct
65 Correct 100 ms 37768 KB Output is correct
66 Correct 104 ms 37732 KB Output is correct
67 Correct 86 ms 37696 KB Output is correct
68 Correct 58 ms 36808 KB Output is correct
69 Correct 59 ms 36860 KB Output is correct
70 Correct 86 ms 42760 KB Output is correct
71 Correct 85 ms 41588 KB Output is correct
72 Correct 1 ms 2684 KB Output is correct
73 Correct 5 ms 6152 KB Output is correct
74 Correct 5 ms 6096 KB Output is correct
75 Correct 1 ms 2644 KB Output is correct
76 Correct 1 ms 2644 KB Output is correct
77 Correct 6 ms 6608 KB Output is correct
78 Correct 5 ms 6144 KB Output is correct
79 Correct 6 ms 6096 KB Output is correct
80 Correct 5 ms 6096 KB Output is correct
81 Correct 1 ms 2644 KB Output is correct
82 Correct 1 ms 2644 KB Output is correct
83 Correct 1 ms 2684 KB Output is correct
84 Correct 2 ms 2680 KB Output is correct
85 Correct 1 ms 2644 KB Output is correct
86 Correct 19 ms 6484 KB Output is correct
87 Correct 19 ms 6576 KB Output is correct
88 Correct 20 ms 6580 KB Output is correct
89 Correct 6 ms 6608 KB Output is correct
90 Correct 6 ms 6224 KB Output is correct
91 Correct 22 ms 6600 KB Output is correct
92 Correct 24 ms 6520 KB Output is correct
93 Correct 1 ms 2644 KB Output is correct
94 Correct 95 ms 47208 KB Output is correct
95 Correct 92 ms 46280 KB Output is correct
96 Correct 87 ms 45116 KB Output is correct
97 Correct 101 ms 47292 KB Output is correct
98 Correct 89 ms 47684 KB Output is correct
99 Correct 84 ms 37688 KB Output is correct
100 Correct 81 ms 37788 KB Output is correct
101 Correct 85 ms 37748 KB Output is correct
102 Correct 78 ms 38080 KB Output is correct
103 Correct 73 ms 41436 KB Output is correct
104 Correct 86 ms 42228 KB Output is correct
105 Correct 74 ms 41364 KB Output is correct
106 Correct 82 ms 42124 KB Output is correct
107 Correct 91 ms 41864 KB Output is correct
108 Correct 85 ms 47368 KB Output is correct
109 Correct 87 ms 47432 KB Output is correct
110 Correct 69 ms 36976 KB Output is correct
111 Correct 68 ms 37036 KB Output is correct
112 Correct 76 ms 37688 KB Output is correct
113 Correct 74 ms 37672 KB Output is correct