#include <bits/stdc++.h>
using namespace std;
const int mx = 1e5+5, ml = 17;
int n, m, k, tin[mx], tout[mx], cnt = 0, up[ml][mx], depth[mx], weight[mx];
vector<pair<int, int>> adj[mx]; vector<int> ans;
void dfs(int node){
tin[node] = ++cnt;
for (int l = 1; l < ml; l++) up[l][node] = up[l-1][up[l-1][node]];
for (pair<int, int> nxt : adj[node])
if (nxt.first != up[0][node])
depth[nxt.first] = depth[node]+1, up[0][nxt.first] = node, dfs(nxt.first);
tout[node] = cnt;
}
bool isAnc(int a, int b){
return tin[a] <= tin[b] and tout[a] >= tout[b];
}
int lca(int a, int b){
if (isAnc(a, b)) return a;
if (isAnc(b, a)) return b;
for (int l = ml-1; l >= 0; l--)
if (up[l][a] != 0 and !isAnc(up[l][a], b))
a = up[l][a];
return up[0][a];
}
int solve(int node){
int ret = weight[node];
for (pair<int, int> nxt : adj[node])
if (nxt.first != up[0][node]){
int val = solve(nxt.first); ret += val;
if (val >= k) ans.push_back(nxt.second);
}
return ret;
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n >> m >> k;
for (int i = 1; i < n; i++){
int a, b; cin >> a >> b;
adj[a].push_back({b, i}); adj[b].push_back({a, i});
}dfs(1);
for (int i = 0; i < m; i++){
int s; cin >> s; int cn[s+1];
for (int j = 0; j < s; j++) cin >> cn[j];
sort(cn, cn+s, [](int a, int b) { return tin[a] < tin[b]; } ); cn[s] = cn[0];
for (int j = 0; j < s; j++) weight[lca(cn[j], cn[j+1])]--, weight[cn[j+1]]++;
}solve(1); sort(ans.begin(), ans.end());
cout<<ans.size()<<endl; for (int res : ans) cout<<res<<" ";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2732 KB |
Output is correct |
2 |
Correct |
7 ms |
3916 KB |
Output is correct |
3 |
Correct |
7 ms |
3916 KB |
Output is correct |
4 |
Correct |
2 ms |
2636 KB |
Output is correct |
5 |
Correct |
2 ms |
2764 KB |
Output is correct |
6 |
Correct |
9 ms |
4300 KB |
Output is correct |
7 |
Correct |
7 ms |
4044 KB |
Output is correct |
8 |
Correct |
6 ms |
3916 KB |
Output is correct |
9 |
Correct |
6 ms |
3916 KB |
Output is correct |
10 |
Correct |
2 ms |
2764 KB |
Output is correct |
11 |
Correct |
2 ms |
2764 KB |
Output is correct |
12 |
Correct |
2 ms |
2764 KB |
Output is correct |
13 |
Correct |
2 ms |
2764 KB |
Output is correct |
14 |
Correct |
2 ms |
2764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2732 KB |
Output is correct |
2 |
Correct |
7 ms |
3916 KB |
Output is correct |
3 |
Correct |
7 ms |
3916 KB |
Output is correct |
4 |
Correct |
2 ms |
2636 KB |
Output is correct |
5 |
Correct |
2 ms |
2764 KB |
Output is correct |
6 |
Correct |
9 ms |
4300 KB |
Output is correct |
7 |
Correct |
7 ms |
4044 KB |
Output is correct |
8 |
Correct |
6 ms |
3916 KB |
Output is correct |
9 |
Correct |
6 ms |
3916 KB |
Output is correct |
10 |
Correct |
2 ms |
2764 KB |
Output is correct |
11 |
Correct |
2 ms |
2764 KB |
Output is correct |
12 |
Correct |
2 ms |
2764 KB |
Output is correct |
13 |
Correct |
2 ms |
2764 KB |
Output is correct |
14 |
Correct |
2 ms |
2764 KB |
Output is correct |
15 |
Correct |
24 ms |
3968 KB |
Output is correct |
16 |
Correct |
25 ms |
3984 KB |
Output is correct |
17 |
Correct |
24 ms |
4060 KB |
Output is correct |
18 |
Correct |
9 ms |
4300 KB |
Output is correct |
19 |
Correct |
10 ms |
4008 KB |
Output is correct |
20 |
Correct |
20 ms |
4052 KB |
Output is correct |
21 |
Correct |
24 ms |
3916 KB |
Output is correct |
22 |
Correct |
2 ms |
2636 KB |
Output is correct |
23 |
Correct |
7 ms |
3940 KB |
Output is correct |
24 |
Correct |
7 ms |
3928 KB |
Output is correct |
25 |
Correct |
2 ms |
2636 KB |
Output is correct |
26 |
Correct |
2 ms |
2764 KB |
Output is correct |
27 |
Correct |
7 ms |
4400 KB |
Output is correct |
28 |
Correct |
7 ms |
4044 KB |
Output is correct |
29 |
Correct |
6 ms |
3916 KB |
Output is correct |
30 |
Correct |
7 ms |
3968 KB |
Output is correct |
31 |
Correct |
2 ms |
2636 KB |
Output is correct |
32 |
Correct |
2 ms |
2636 KB |
Output is correct |
33 |
Correct |
3 ms |
2764 KB |
Output is correct |
34 |
Correct |
2 ms |
2764 KB |
Output is correct |
35 |
Correct |
2 ms |
2764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
76 ms |
22672 KB |
Output is correct |
2 |
Correct |
2 ms |
2764 KB |
Output is correct |
3 |
Correct |
71 ms |
22288 KB |
Output is correct |
4 |
Correct |
64 ms |
21792 KB |
Output is correct |
5 |
Correct |
90 ms |
22720 KB |
Output is correct |
6 |
Correct |
96 ms |
22848 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
114 ms |
18188 KB |
Output is correct |
2 |
Correct |
153 ms |
14908 KB |
Output is correct |
3 |
Correct |
164 ms |
14560 KB |
Output is correct |
4 |
Correct |
147 ms |
14560 KB |
Output is correct |
5 |
Correct |
122 ms |
14604 KB |
Output is correct |
6 |
Correct |
90 ms |
18352 KB |
Output is correct |
7 |
Correct |
88 ms |
18232 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
114 ms |
18188 KB |
Output is correct |
2 |
Correct |
153 ms |
14908 KB |
Output is correct |
3 |
Correct |
164 ms |
14560 KB |
Output is correct |
4 |
Correct |
147 ms |
14560 KB |
Output is correct |
5 |
Correct |
122 ms |
14604 KB |
Output is correct |
6 |
Correct |
90 ms |
18352 KB |
Output is correct |
7 |
Correct |
88 ms |
18232 KB |
Output is correct |
8 |
Correct |
135 ms |
18496 KB |
Output is correct |
9 |
Correct |
142 ms |
18528 KB |
Output is correct |
10 |
Correct |
73 ms |
22844 KB |
Output is correct |
11 |
Correct |
73 ms |
22844 KB |
Output is correct |
12 |
Correct |
86 ms |
14796 KB |
Output is correct |
13 |
Correct |
110 ms |
14788 KB |
Output is correct |
14 |
Correct |
140 ms |
14608 KB |
Output is correct |
15 |
Correct |
151 ms |
14584 KB |
Output is correct |
16 |
Correct |
150 ms |
14604 KB |
Output is correct |
17 |
Correct |
157 ms |
14692 KB |
Output is correct |
18 |
Correct |
144 ms |
14584 KB |
Output is correct |
19 |
Correct |
143 ms |
14904 KB |
Output is correct |
20 |
Correct |
95 ms |
18588 KB |
Output is correct |
21 |
Correct |
96 ms |
18672 KB |
Output is correct |
22 |
Correct |
112 ms |
18552 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2732 KB |
Output is correct |
2 |
Correct |
7 ms |
3916 KB |
Output is correct |
3 |
Correct |
7 ms |
3916 KB |
Output is correct |
4 |
Correct |
2 ms |
2636 KB |
Output is correct |
5 |
Correct |
2 ms |
2764 KB |
Output is correct |
6 |
Correct |
9 ms |
4300 KB |
Output is correct |
7 |
Correct |
7 ms |
4044 KB |
Output is correct |
8 |
Correct |
6 ms |
3916 KB |
Output is correct |
9 |
Correct |
6 ms |
3916 KB |
Output is correct |
10 |
Correct |
2 ms |
2764 KB |
Output is correct |
11 |
Correct |
2 ms |
2764 KB |
Output is correct |
12 |
Correct |
2 ms |
2764 KB |
Output is correct |
13 |
Correct |
2 ms |
2764 KB |
Output is correct |
14 |
Correct |
2 ms |
2764 KB |
Output is correct |
15 |
Correct |
24 ms |
3968 KB |
Output is correct |
16 |
Correct |
25 ms |
3984 KB |
Output is correct |
17 |
Correct |
24 ms |
4060 KB |
Output is correct |
18 |
Correct |
9 ms |
4300 KB |
Output is correct |
19 |
Correct |
10 ms |
4008 KB |
Output is correct |
20 |
Correct |
20 ms |
4052 KB |
Output is correct |
21 |
Correct |
24 ms |
3916 KB |
Output is correct |
22 |
Correct |
2 ms |
2636 KB |
Output is correct |
23 |
Correct |
7 ms |
3940 KB |
Output is correct |
24 |
Correct |
7 ms |
3928 KB |
Output is correct |
25 |
Correct |
2 ms |
2636 KB |
Output is correct |
26 |
Correct |
2 ms |
2764 KB |
Output is correct |
27 |
Correct |
7 ms |
4400 KB |
Output is correct |
28 |
Correct |
7 ms |
4044 KB |
Output is correct |
29 |
Correct |
6 ms |
3916 KB |
Output is correct |
30 |
Correct |
7 ms |
3968 KB |
Output is correct |
31 |
Correct |
2 ms |
2636 KB |
Output is correct |
32 |
Correct |
2 ms |
2636 KB |
Output is correct |
33 |
Correct |
3 ms |
2764 KB |
Output is correct |
34 |
Correct |
2 ms |
2764 KB |
Output is correct |
35 |
Correct |
2 ms |
2764 KB |
Output is correct |
36 |
Correct |
76 ms |
22672 KB |
Output is correct |
37 |
Correct |
2 ms |
2764 KB |
Output is correct |
38 |
Correct |
71 ms |
22288 KB |
Output is correct |
39 |
Correct |
64 ms |
21792 KB |
Output is correct |
40 |
Correct |
90 ms |
22720 KB |
Output is correct |
41 |
Correct |
96 ms |
22848 KB |
Output is correct |
42 |
Correct |
114 ms |
18188 KB |
Output is correct |
43 |
Correct |
153 ms |
14908 KB |
Output is correct |
44 |
Correct |
164 ms |
14560 KB |
Output is correct |
45 |
Correct |
147 ms |
14560 KB |
Output is correct |
46 |
Correct |
122 ms |
14604 KB |
Output is correct |
47 |
Correct |
90 ms |
18352 KB |
Output is correct |
48 |
Correct |
88 ms |
18232 KB |
Output is correct |
49 |
Correct |
135 ms |
18496 KB |
Output is correct |
50 |
Correct |
142 ms |
18528 KB |
Output is correct |
51 |
Correct |
73 ms |
22844 KB |
Output is correct |
52 |
Correct |
73 ms |
22844 KB |
Output is correct |
53 |
Correct |
86 ms |
14796 KB |
Output is correct |
54 |
Correct |
110 ms |
14788 KB |
Output is correct |
55 |
Correct |
140 ms |
14608 KB |
Output is correct |
56 |
Correct |
151 ms |
14584 KB |
Output is correct |
57 |
Correct |
150 ms |
14604 KB |
Output is correct |
58 |
Correct |
157 ms |
14692 KB |
Output is correct |
59 |
Correct |
144 ms |
14584 KB |
Output is correct |
60 |
Correct |
143 ms |
14904 KB |
Output is correct |
61 |
Correct |
95 ms |
18588 KB |
Output is correct |
62 |
Correct |
96 ms |
18672 KB |
Output is correct |
63 |
Correct |
112 ms |
18552 KB |
Output is correct |
64 |
Correct |
139 ms |
18640 KB |
Output is correct |
65 |
Correct |
152 ms |
14608 KB |
Output is correct |
66 |
Correct |
136 ms |
14600 KB |
Output is correct |
67 |
Correct |
140 ms |
14600 KB |
Output is correct |
68 |
Correct |
103 ms |
14888 KB |
Output is correct |
69 |
Correct |
110 ms |
14764 KB |
Output is correct |
70 |
Correct |
111 ms |
19000 KB |
Output is correct |
71 |
Correct |
109 ms |
18372 KB |
Output is correct |
72 |
Correct |
3 ms |
2636 KB |
Output is correct |
73 |
Correct |
7 ms |
3916 KB |
Output is correct |
74 |
Correct |
7 ms |
3936 KB |
Output is correct |
75 |
Correct |
2 ms |
2636 KB |
Output is correct |
76 |
Correct |
2 ms |
2764 KB |
Output is correct |
77 |
Correct |
8 ms |
4416 KB |
Output is correct |
78 |
Correct |
10 ms |
3992 KB |
Output is correct |
79 |
Correct |
6 ms |
3916 KB |
Output is correct |
80 |
Correct |
7 ms |
3916 KB |
Output is correct |
81 |
Correct |
2 ms |
2688 KB |
Output is correct |
82 |
Correct |
2 ms |
2764 KB |
Output is correct |
83 |
Correct |
2 ms |
2636 KB |
Output is correct |
84 |
Correct |
2 ms |
2764 KB |
Output is correct |
85 |
Correct |
2 ms |
2636 KB |
Output is correct |
86 |
Correct |
24 ms |
3976 KB |
Output is correct |
87 |
Correct |
22 ms |
3984 KB |
Output is correct |
88 |
Correct |
23 ms |
3976 KB |
Output is correct |
89 |
Correct |
8 ms |
4300 KB |
Output is correct |
90 |
Correct |
7 ms |
4044 KB |
Output is correct |
91 |
Correct |
26 ms |
4044 KB |
Output is correct |
92 |
Correct |
25 ms |
4004 KB |
Output is correct |
93 |
Correct |
2 ms |
2636 KB |
Output is correct |
94 |
Correct |
78 ms |
22676 KB |
Output is correct |
95 |
Correct |
71 ms |
22292 KB |
Output is correct |
96 |
Correct |
66 ms |
21792 KB |
Output is correct |
97 |
Correct |
73 ms |
22716 KB |
Output is correct |
98 |
Correct |
91 ms |
22848 KB |
Output is correct |
99 |
Correct |
143 ms |
14584 KB |
Output is correct |
100 |
Correct |
128 ms |
14608 KB |
Output is correct |
101 |
Correct |
128 ms |
14804 KB |
Output is correct |
102 |
Correct |
142 ms |
14908 KB |
Output is correct |
103 |
Correct |
96 ms |
18256 KB |
Output is correct |
104 |
Correct |
112 ms |
18636 KB |
Output is correct |
105 |
Correct |
101 ms |
18220 KB |
Output is correct |
106 |
Correct |
123 ms |
18864 KB |
Output is correct |
107 |
Correct |
122 ms |
18500 KB |
Output is correct |
108 |
Correct |
74 ms |
22912 KB |
Output is correct |
109 |
Correct |
72 ms |
22796 KB |
Output is correct |
110 |
Correct |
93 ms |
14700 KB |
Output is correct |
111 |
Correct |
96 ms |
14820 KB |
Output is correct |
112 |
Correct |
143 ms |
14516 KB |
Output is correct |
113 |
Correct |
152 ms |
14532 KB |
Output is correct |