//IN THE NAME OF GOD
#include<bits/stdc++.h>
#pragma GCC optimize("O2,unroll-loops")
#define endl '\n'
#define F first
#define S second
#define pii pair<int,int>
#define all(x) x.begin(),x.end()
#define pb push_back
#define fast_io ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define file_io freopen("input.in" , "r" , stdin) ; freopen("output.out" , "w" , stdout);
using namespace std;
typedef long long ll;
typedef long double dll;
const int N = 1e5+7, lg = 23;
int mark[N], h[N], par[lg][N], st[N], en[N], tim, a[N];
set<int> dp[N], rem[N];
vector<pii> g[N], vec;
vector<int> ans;
void dfs(int v){
mark[v] = 1;
st[v] = ++tim;
for(int i=1; i<lg; i++) par[i][v] = par[i-1][par[i-1][v]];
for(pii cur : g[v]){
int u = cur.F;
if (mark[u]) continue;
h[u] = h[v]+1;
par[0][u] = v;
dfs(u);
}
en[v] = ++tim;
}
int lca(int v, int u){
if (h[v] < h[u]) swap(v,u);
int dif = h[v] - h[u];
for(int i=lg-1; i>=0; i--) if ((dif>>i)&1) v = par[i][v];
if (v == u) return v;
for(int i=lg-1; i>=0; i--){
if (par[i][v] != par[i][u]){
v = par[i][v];
u = par[i][u];
}
}
return par[0][v];
}
void dfs2(int v, int k){
mark[v] = 1;
for(pii cur : g[v]){
int u = cur.F, id = cur.S;
if (mark[u]) continue;
dfs2(u,k);
if (int(dp[u].size()) >= k) ans.pb(id);
if (int(dp[u].size()) > int(dp[v].size())) swap(dp[u],dp[v]);
for(int cur : dp[u]) dp[v].insert(cur);
for(int cur : rem[v]) dp[v].erase(cur);
}
}
int32_t main(){
fast_io;
int n,m,k; cin >> n >> m >> k;
for(int i=1; i<n; i++){
int v,u; cin >> v >> u;
g[v].pb({u,i});
g[u].pb({v,i});
}
dfs(1);
for(int j=1; j<=m; j++){
int x; cin >> x;
for(int i=1; i<=x; i++){
cin >> a[i];
vec.pb({st[a[i]],a[i]});
}
int lc = a[1];
for(int i=2; i<=x; i++) lc = lca(lc,a[i]);
rem[lc].insert(j);
for(int i=1; i<=x; i++) dp[a[i]].insert(j);
}
fill(mark+1,mark+n+1,0);
dfs2(1,k);
sort(all(ans));
cout << int(ans.size()) << endl;
for(int cur : ans) cout << cur << " ";
cout << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
19156 KB |
Output is correct |
2 |
Correct |
7 ms |
20096 KB |
Output is correct |
3 |
Correct |
7 ms |
20056 KB |
Output is correct |
4 |
Correct |
4 ms |
19132 KB |
Output is correct |
5 |
Correct |
3 ms |
19036 KB |
Output is correct |
6 |
Correct |
8 ms |
20892 KB |
Output is correct |
7 |
Correct |
7 ms |
20316 KB |
Output is correct |
8 |
Correct |
21 ms |
20060 KB |
Output is correct |
9 |
Correct |
8 ms |
20316 KB |
Output is correct |
10 |
Correct |
3 ms |
19036 KB |
Output is correct |
11 |
Correct |
5 ms |
19036 KB |
Output is correct |
12 |
Correct |
4 ms |
19048 KB |
Output is correct |
13 |
Correct |
4 ms |
19092 KB |
Output is correct |
14 |
Correct |
3 ms |
19036 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
19156 KB |
Output is correct |
2 |
Correct |
7 ms |
20096 KB |
Output is correct |
3 |
Correct |
7 ms |
20056 KB |
Output is correct |
4 |
Correct |
4 ms |
19132 KB |
Output is correct |
5 |
Correct |
3 ms |
19036 KB |
Output is correct |
6 |
Correct |
8 ms |
20892 KB |
Output is correct |
7 |
Correct |
7 ms |
20316 KB |
Output is correct |
8 |
Correct |
21 ms |
20060 KB |
Output is correct |
9 |
Correct |
8 ms |
20316 KB |
Output is correct |
10 |
Correct |
3 ms |
19036 KB |
Output is correct |
11 |
Correct |
5 ms |
19036 KB |
Output is correct |
12 |
Correct |
4 ms |
19048 KB |
Output is correct |
13 |
Correct |
4 ms |
19092 KB |
Output is correct |
14 |
Correct |
3 ms |
19036 KB |
Output is correct |
15 |
Correct |
34 ms |
26432 KB |
Output is correct |
16 |
Correct |
33 ms |
26316 KB |
Output is correct |
17 |
Correct |
33 ms |
26320 KB |
Output is correct |
18 |
Correct |
9 ms |
21084 KB |
Output is correct |
19 |
Correct |
8 ms |
20380 KB |
Output is correct |
20 |
Correct |
114 ms |
26056 KB |
Output is correct |
21 |
Correct |
63 ms |
26052 KB |
Output is correct |
22 |
Correct |
3 ms |
19036 KB |
Output is correct |
23 |
Correct |
7 ms |
20060 KB |
Output is correct |
24 |
Correct |
9 ms |
20040 KB |
Output is correct |
25 |
Correct |
3 ms |
19036 KB |
Output is correct |
26 |
Correct |
3 ms |
19088 KB |
Output is correct |
27 |
Correct |
10 ms |
20828 KB |
Output is correct |
28 |
Correct |
7 ms |
20316 KB |
Output is correct |
29 |
Correct |
23 ms |
20248 KB |
Output is correct |
30 |
Correct |
8 ms |
20348 KB |
Output is correct |
31 |
Correct |
4 ms |
19036 KB |
Output is correct |
32 |
Correct |
4 ms |
19036 KB |
Output is correct |
33 |
Correct |
3 ms |
19036 KB |
Output is correct |
34 |
Correct |
4 ms |
19132 KB |
Output is correct |
35 |
Correct |
4 ms |
19036 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
124 ms |
52228 KB |
Output is correct |
2 |
Correct |
4 ms |
19032 KB |
Output is correct |
3 |
Correct |
117 ms |
51580 KB |
Output is correct |
4 |
Correct |
112 ms |
51136 KB |
Output is correct |
5 |
Correct |
89 ms |
49348 KB |
Output is correct |
6 |
Correct |
125 ms |
51988 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
127 ms |
46028 KB |
Output is correct |
2 |
Correct |
156 ms |
41156 KB |
Output is correct |
3 |
Correct |
173 ms |
44552 KB |
Output is correct |
4 |
Correct |
151 ms |
44660 KB |
Output is correct |
5 |
Correct |
168 ms |
44740 KB |
Output is correct |
6 |
Correct |
124 ms |
46020 KB |
Output is correct |
7 |
Correct |
124 ms |
46020 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
127 ms |
46028 KB |
Output is correct |
2 |
Correct |
156 ms |
41156 KB |
Output is correct |
3 |
Correct |
173 ms |
44552 KB |
Output is correct |
4 |
Correct |
151 ms |
44660 KB |
Output is correct |
5 |
Correct |
168 ms |
44740 KB |
Output is correct |
6 |
Correct |
124 ms |
46020 KB |
Output is correct |
7 |
Correct |
124 ms |
46020 KB |
Output is correct |
8 |
Correct |
114 ms |
43820 KB |
Output is correct |
9 |
Correct |
114 ms |
43704 KB |
Output is correct |
10 |
Correct |
81 ms |
48868 KB |
Output is correct |
11 |
Correct |
79 ms |
48944 KB |
Output is correct |
12 |
Correct |
70 ms |
33868 KB |
Output is correct |
13 |
Correct |
72 ms |
33856 KB |
Output is correct |
14 |
Correct |
110 ms |
39364 KB |
Output is correct |
15 |
Correct |
117 ms |
39708 KB |
Output is correct |
16 |
Correct |
175 ms |
45924 KB |
Output is correct |
17 |
Correct |
153 ms |
46212 KB |
Output is correct |
18 |
Correct |
147 ms |
44116 KB |
Output is correct |
19 |
Correct |
165 ms |
41616 KB |
Output is correct |
20 |
Correct |
128 ms |
46312 KB |
Output is correct |
21 |
Correct |
131 ms |
46536 KB |
Output is correct |
22 |
Correct |
134 ms |
46276 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
19156 KB |
Output is correct |
2 |
Correct |
7 ms |
20096 KB |
Output is correct |
3 |
Correct |
7 ms |
20056 KB |
Output is correct |
4 |
Correct |
4 ms |
19132 KB |
Output is correct |
5 |
Correct |
3 ms |
19036 KB |
Output is correct |
6 |
Correct |
8 ms |
20892 KB |
Output is correct |
7 |
Correct |
7 ms |
20316 KB |
Output is correct |
8 |
Correct |
21 ms |
20060 KB |
Output is correct |
9 |
Correct |
8 ms |
20316 KB |
Output is correct |
10 |
Correct |
3 ms |
19036 KB |
Output is correct |
11 |
Correct |
5 ms |
19036 KB |
Output is correct |
12 |
Correct |
4 ms |
19048 KB |
Output is correct |
13 |
Correct |
4 ms |
19092 KB |
Output is correct |
14 |
Correct |
3 ms |
19036 KB |
Output is correct |
15 |
Correct |
34 ms |
26432 KB |
Output is correct |
16 |
Correct |
33 ms |
26316 KB |
Output is correct |
17 |
Correct |
33 ms |
26320 KB |
Output is correct |
18 |
Correct |
9 ms |
21084 KB |
Output is correct |
19 |
Correct |
8 ms |
20380 KB |
Output is correct |
20 |
Correct |
114 ms |
26056 KB |
Output is correct |
21 |
Correct |
63 ms |
26052 KB |
Output is correct |
22 |
Correct |
3 ms |
19036 KB |
Output is correct |
23 |
Correct |
7 ms |
20060 KB |
Output is correct |
24 |
Correct |
9 ms |
20040 KB |
Output is correct |
25 |
Correct |
3 ms |
19036 KB |
Output is correct |
26 |
Correct |
3 ms |
19088 KB |
Output is correct |
27 |
Correct |
10 ms |
20828 KB |
Output is correct |
28 |
Correct |
7 ms |
20316 KB |
Output is correct |
29 |
Correct |
23 ms |
20248 KB |
Output is correct |
30 |
Correct |
8 ms |
20348 KB |
Output is correct |
31 |
Correct |
4 ms |
19036 KB |
Output is correct |
32 |
Correct |
4 ms |
19036 KB |
Output is correct |
33 |
Correct |
3 ms |
19036 KB |
Output is correct |
34 |
Correct |
4 ms |
19132 KB |
Output is correct |
35 |
Correct |
4 ms |
19036 KB |
Output is correct |
36 |
Correct |
124 ms |
52228 KB |
Output is correct |
37 |
Correct |
4 ms |
19032 KB |
Output is correct |
38 |
Correct |
117 ms |
51580 KB |
Output is correct |
39 |
Correct |
112 ms |
51136 KB |
Output is correct |
40 |
Correct |
89 ms |
49348 KB |
Output is correct |
41 |
Correct |
125 ms |
51988 KB |
Output is correct |
42 |
Correct |
127 ms |
46028 KB |
Output is correct |
43 |
Correct |
156 ms |
41156 KB |
Output is correct |
44 |
Correct |
173 ms |
44552 KB |
Output is correct |
45 |
Correct |
151 ms |
44660 KB |
Output is correct |
46 |
Correct |
168 ms |
44740 KB |
Output is correct |
47 |
Correct |
124 ms |
46020 KB |
Output is correct |
48 |
Correct |
124 ms |
46020 KB |
Output is correct |
49 |
Correct |
114 ms |
43820 KB |
Output is correct |
50 |
Correct |
114 ms |
43704 KB |
Output is correct |
51 |
Correct |
81 ms |
48868 KB |
Output is correct |
52 |
Correct |
79 ms |
48944 KB |
Output is correct |
53 |
Correct |
70 ms |
33868 KB |
Output is correct |
54 |
Correct |
72 ms |
33856 KB |
Output is correct |
55 |
Correct |
110 ms |
39364 KB |
Output is correct |
56 |
Correct |
117 ms |
39708 KB |
Output is correct |
57 |
Correct |
175 ms |
45924 KB |
Output is correct |
58 |
Correct |
153 ms |
46212 KB |
Output is correct |
59 |
Correct |
147 ms |
44116 KB |
Output is correct |
60 |
Correct |
165 ms |
41616 KB |
Output is correct |
61 |
Correct |
128 ms |
46312 KB |
Output is correct |
62 |
Correct |
131 ms |
46536 KB |
Output is correct |
63 |
Correct |
134 ms |
46276 KB |
Output is correct |
64 |
Correct |
123 ms |
45072 KB |
Output is correct |
65 |
Correct |
261 ms |
50964 KB |
Output is correct |
66 |
Correct |
128 ms |
46792 KB |
Output is correct |
67 |
Correct |
120 ms |
42648 KB |
Output is correct |
68 |
Correct |
63 ms |
31916 KB |
Output is correct |
69 |
Correct |
83 ms |
31860 KB |
Output is correct |
70 |
Correct |
118 ms |
46128 KB |
Output is correct |
71 |
Correct |
108 ms |
43696 KB |
Output is correct |
72 |
Correct |
4 ms |
19032 KB |
Output is correct |
73 |
Correct |
7 ms |
20060 KB |
Output is correct |
74 |
Correct |
8 ms |
20060 KB |
Output is correct |
75 |
Correct |
4 ms |
19036 KB |
Output is correct |
76 |
Correct |
3 ms |
19036 KB |
Output is correct |
77 |
Correct |
9 ms |
20960 KB |
Output is correct |
78 |
Correct |
8 ms |
20312 KB |
Output is correct |
79 |
Correct |
16 ms |
20060 KB |
Output is correct |
80 |
Correct |
8 ms |
20316 KB |
Output is correct |
81 |
Correct |
3 ms |
19036 KB |
Output is correct |
82 |
Correct |
3 ms |
19036 KB |
Output is correct |
83 |
Correct |
3 ms |
19036 KB |
Output is correct |
84 |
Correct |
3 ms |
19036 KB |
Output is correct |
85 |
Correct |
3 ms |
19036 KB |
Output is correct |
86 |
Correct |
35 ms |
26496 KB |
Output is correct |
87 |
Correct |
44 ms |
26536 KB |
Output is correct |
88 |
Correct |
41 ms |
26560 KB |
Output is correct |
89 |
Correct |
8 ms |
21084 KB |
Output is correct |
90 |
Correct |
8 ms |
20316 KB |
Output is correct |
91 |
Correct |
116 ms |
26072 KB |
Output is correct |
92 |
Correct |
64 ms |
26076 KB |
Output is correct |
93 |
Correct |
3 ms |
19036 KB |
Output is correct |
94 |
Correct |
122 ms |
52272 KB |
Output is correct |
95 |
Correct |
117 ms |
51732 KB |
Output is correct |
96 |
Correct |
115 ms |
51040 KB |
Output is correct |
97 |
Correct |
89 ms |
49344 KB |
Output is correct |
98 |
Correct |
116 ms |
52080 KB |
Output is correct |
99 |
Correct |
163 ms |
48364 KB |
Output is correct |
100 |
Correct |
162 ms |
45676 KB |
Output is correct |
101 |
Correct |
170 ms |
45936 KB |
Output is correct |
102 |
Correct |
144 ms |
41668 KB |
Output is correct |
103 |
Correct |
141 ms |
46024 KB |
Output is correct |
104 |
Correct |
126 ms |
46540 KB |
Output is correct |
105 |
Correct |
133 ms |
45944 KB |
Output is correct |
106 |
Correct |
114 ms |
43776 KB |
Output is correct |
107 |
Correct |
100 ms |
43752 KB |
Output is correct |
108 |
Correct |
78 ms |
49096 KB |
Output is correct |
109 |
Correct |
79 ms |
48936 KB |
Output is correct |
110 |
Correct |
74 ms |
33868 KB |
Output is correct |
111 |
Correct |
68 ms |
33900 KB |
Output is correct |
112 |
Correct |
111 ms |
39268 KB |
Output is correct |
113 |
Correct |
130 ms |
39728 KB |
Output is correct |