#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define ll long long
const int MAX=1e5+10, L=18;
int n, m, k, jump[MAX][L+2], gle[MAX], pre[MAX];
vector<pair<int,int>>g[MAX], akt;
int czas=1;
void dfs(int v, int oj){
jump[v][0]=oj;
pre[v]=czas++;
for(int i=1; i<=L; i++)
jump[v][i]=jump[jump[v][i-1]][i-1];
for(auto s:g[v]){
if(s.fi!=oj){
gle[s.fi]=gle[v]+1;
dfs(s.fi, v);
}
}
}
int LCA(int a, int b){
if(gle[b]>gle[a]) swap(a, b);
for(int i=L; i>=0; i--)
if(gle[jump[a][i]]>=gle[b])
a=jump[a][i];
if(a==b) return a;
int wyn=a;
for(int i=L; i>=0; i--){
if(jump[a][i]==jump[b][i])
wyn=jump[a][i];
else
a=jump[a][i], b=jump[b][i];
}
return wyn;
}
int dod[MAX], usu[MAX], suma[MAX];
vector<int>wynik;
void dfs2(int v, int oj, int ind){
for(auto s:g[v]){
if(s.fi!=oj){
dfs2(s.fi, v, s.se);
suma[v]+=suma[s.fi];
}
}
suma[v]+=dod[v]-usu[v];
if(suma[v]>=k*2) wynik.pb(ind);
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin>>n>>m>>k;
for(int i=1; i<=n-1; i++){
int a, b;
cin>>a>>b;
g[a].pb({b, i}), g[b].pb({a, i});
}
dfs(1, 1);
for(int i=1; i<=m; i++){
int s, x;
cin>>s;
akt.clear();
for(int j=1; j<=s; j++){
cin>>x;
akt.pb({pre[x], x});
}
sort(akt.begin(), akt.end());
int last=0;
for(auto a: akt){
if(last){
int lca=LCA(last, a.se);
dod[last]++, dod[a.se]++, usu[lca]+=2;
}
last=a.se;
}
if(akt.size()>=2){
int lca=LCA(akt[0].se, akt.back().se);
dod[akt.back().se]++, dod[akt[0].se]++, usu[lca]+=2;
}
}
dfs2(1, 1, 0);
cout<<wynik.size()<<"\n";
sort(wynik.begin(), wynik.end());
for(auto a:wynik)
cout<<a<<" ";
cout<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
7 ms |
4048 KB |
Output is correct |
3 |
Correct |
6 ms |
3924 KB |
Output is correct |
4 |
Correct |
1 ms |
2644 KB |
Output is correct |
5 |
Correct |
2 ms |
2644 KB |
Output is correct |
6 |
Correct |
6 ms |
4436 KB |
Output is correct |
7 |
Correct |
6 ms |
4100 KB |
Output is correct |
8 |
Correct |
5 ms |
4052 KB |
Output is correct |
9 |
Correct |
5 ms |
3932 KB |
Output is correct |
10 |
Correct |
2 ms |
2644 KB |
Output is correct |
11 |
Correct |
2 ms |
2644 KB |
Output is correct |
12 |
Correct |
1 ms |
2644 KB |
Output is correct |
13 |
Correct |
1 ms |
2644 KB |
Output is correct |
14 |
Correct |
1 ms |
2644 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
7 ms |
4048 KB |
Output is correct |
3 |
Correct |
6 ms |
3924 KB |
Output is correct |
4 |
Correct |
1 ms |
2644 KB |
Output is correct |
5 |
Correct |
2 ms |
2644 KB |
Output is correct |
6 |
Correct |
6 ms |
4436 KB |
Output is correct |
7 |
Correct |
6 ms |
4100 KB |
Output is correct |
8 |
Correct |
5 ms |
4052 KB |
Output is correct |
9 |
Correct |
5 ms |
3932 KB |
Output is correct |
10 |
Correct |
2 ms |
2644 KB |
Output is correct |
11 |
Correct |
2 ms |
2644 KB |
Output is correct |
12 |
Correct |
1 ms |
2644 KB |
Output is correct |
13 |
Correct |
1 ms |
2644 KB |
Output is correct |
14 |
Correct |
1 ms |
2644 KB |
Output is correct |
15 |
Correct |
30 ms |
4024 KB |
Output is correct |
16 |
Correct |
28 ms |
4004 KB |
Output is correct |
17 |
Correct |
30 ms |
4136 KB |
Output is correct |
18 |
Correct |
6 ms |
4436 KB |
Output is correct |
19 |
Correct |
9 ms |
3976 KB |
Output is correct |
20 |
Correct |
35 ms |
4016 KB |
Output is correct |
21 |
Correct |
34 ms |
4000 KB |
Output is correct |
22 |
Correct |
1 ms |
2644 KB |
Output is correct |
23 |
Correct |
6 ms |
3996 KB |
Output is correct |
24 |
Correct |
6 ms |
3924 KB |
Output is correct |
25 |
Correct |
1 ms |
2644 KB |
Output is correct |
26 |
Correct |
1 ms |
2644 KB |
Output is correct |
27 |
Correct |
7 ms |
4436 KB |
Output is correct |
28 |
Correct |
6 ms |
4052 KB |
Output is correct |
29 |
Correct |
6 ms |
4052 KB |
Output is correct |
30 |
Correct |
6 ms |
4052 KB |
Output is correct |
31 |
Correct |
1 ms |
2644 KB |
Output is correct |
32 |
Correct |
2 ms |
2644 KB |
Output is correct |
33 |
Correct |
2 ms |
2644 KB |
Output is correct |
34 |
Correct |
2 ms |
2644 KB |
Output is correct |
35 |
Correct |
1 ms |
2644 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
112 ms |
24216 KB |
Output is correct |
2 |
Correct |
2 ms |
2644 KB |
Output is correct |
3 |
Correct |
109 ms |
23920 KB |
Output is correct |
4 |
Correct |
109 ms |
23352 KB |
Output is correct |
5 |
Correct |
116 ms |
24248 KB |
Output is correct |
6 |
Correct |
101 ms |
24388 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
19408 KB |
Output is correct |
2 |
Correct |
94 ms |
16148 KB |
Output is correct |
3 |
Correct |
109 ms |
15820 KB |
Output is correct |
4 |
Correct |
100 ms |
15796 KB |
Output is correct |
5 |
Correct |
98 ms |
15792 KB |
Output is correct |
6 |
Correct |
78 ms |
19520 KB |
Output is correct |
7 |
Correct |
76 ms |
19600 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
83 ms |
19408 KB |
Output is correct |
2 |
Correct |
94 ms |
16148 KB |
Output is correct |
3 |
Correct |
109 ms |
15820 KB |
Output is correct |
4 |
Correct |
100 ms |
15796 KB |
Output is correct |
5 |
Correct |
98 ms |
15792 KB |
Output is correct |
6 |
Correct |
78 ms |
19520 KB |
Output is correct |
7 |
Correct |
76 ms |
19600 KB |
Output is correct |
8 |
Correct |
89 ms |
20056 KB |
Output is correct |
9 |
Correct |
92 ms |
21124 KB |
Output is correct |
10 |
Correct |
109 ms |
25512 KB |
Output is correct |
11 |
Correct |
104 ms |
25604 KB |
Output is correct |
12 |
Correct |
77 ms |
17228 KB |
Output is correct |
13 |
Correct |
77 ms |
17144 KB |
Output is correct |
14 |
Correct |
95 ms |
17212 KB |
Output is correct |
15 |
Correct |
98 ms |
17116 KB |
Output is correct |
16 |
Correct |
103 ms |
16912 KB |
Output is correct |
17 |
Correct |
102 ms |
16968 KB |
Output is correct |
18 |
Correct |
126 ms |
16916 KB |
Output is correct |
19 |
Correct |
102 ms |
17292 KB |
Output is correct |
20 |
Correct |
81 ms |
20928 KB |
Output is correct |
21 |
Correct |
80 ms |
20940 KB |
Output is correct |
22 |
Correct |
88 ms |
20896 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
7 ms |
4048 KB |
Output is correct |
3 |
Correct |
6 ms |
3924 KB |
Output is correct |
4 |
Correct |
1 ms |
2644 KB |
Output is correct |
5 |
Correct |
2 ms |
2644 KB |
Output is correct |
6 |
Correct |
6 ms |
4436 KB |
Output is correct |
7 |
Correct |
6 ms |
4100 KB |
Output is correct |
8 |
Correct |
5 ms |
4052 KB |
Output is correct |
9 |
Correct |
5 ms |
3932 KB |
Output is correct |
10 |
Correct |
2 ms |
2644 KB |
Output is correct |
11 |
Correct |
2 ms |
2644 KB |
Output is correct |
12 |
Correct |
1 ms |
2644 KB |
Output is correct |
13 |
Correct |
1 ms |
2644 KB |
Output is correct |
14 |
Correct |
1 ms |
2644 KB |
Output is correct |
15 |
Correct |
30 ms |
4024 KB |
Output is correct |
16 |
Correct |
28 ms |
4004 KB |
Output is correct |
17 |
Correct |
30 ms |
4136 KB |
Output is correct |
18 |
Correct |
6 ms |
4436 KB |
Output is correct |
19 |
Correct |
9 ms |
3976 KB |
Output is correct |
20 |
Correct |
35 ms |
4016 KB |
Output is correct |
21 |
Correct |
34 ms |
4000 KB |
Output is correct |
22 |
Correct |
1 ms |
2644 KB |
Output is correct |
23 |
Correct |
6 ms |
3996 KB |
Output is correct |
24 |
Correct |
6 ms |
3924 KB |
Output is correct |
25 |
Correct |
1 ms |
2644 KB |
Output is correct |
26 |
Correct |
1 ms |
2644 KB |
Output is correct |
27 |
Correct |
7 ms |
4436 KB |
Output is correct |
28 |
Correct |
6 ms |
4052 KB |
Output is correct |
29 |
Correct |
6 ms |
4052 KB |
Output is correct |
30 |
Correct |
6 ms |
4052 KB |
Output is correct |
31 |
Correct |
1 ms |
2644 KB |
Output is correct |
32 |
Correct |
2 ms |
2644 KB |
Output is correct |
33 |
Correct |
2 ms |
2644 KB |
Output is correct |
34 |
Correct |
2 ms |
2644 KB |
Output is correct |
35 |
Correct |
1 ms |
2644 KB |
Output is correct |
36 |
Correct |
112 ms |
24216 KB |
Output is correct |
37 |
Correct |
2 ms |
2644 KB |
Output is correct |
38 |
Correct |
109 ms |
23920 KB |
Output is correct |
39 |
Correct |
109 ms |
23352 KB |
Output is correct |
40 |
Correct |
116 ms |
24248 KB |
Output is correct |
41 |
Correct |
101 ms |
24388 KB |
Output is correct |
42 |
Correct |
83 ms |
19408 KB |
Output is correct |
43 |
Correct |
94 ms |
16148 KB |
Output is correct |
44 |
Correct |
109 ms |
15820 KB |
Output is correct |
45 |
Correct |
100 ms |
15796 KB |
Output is correct |
46 |
Correct |
98 ms |
15792 KB |
Output is correct |
47 |
Correct |
78 ms |
19520 KB |
Output is correct |
48 |
Correct |
76 ms |
19600 KB |
Output is correct |
49 |
Correct |
89 ms |
20056 KB |
Output is correct |
50 |
Correct |
92 ms |
21124 KB |
Output is correct |
51 |
Correct |
109 ms |
25512 KB |
Output is correct |
52 |
Correct |
104 ms |
25604 KB |
Output is correct |
53 |
Correct |
77 ms |
17228 KB |
Output is correct |
54 |
Correct |
77 ms |
17144 KB |
Output is correct |
55 |
Correct |
95 ms |
17212 KB |
Output is correct |
56 |
Correct |
98 ms |
17116 KB |
Output is correct |
57 |
Correct |
103 ms |
16912 KB |
Output is correct |
58 |
Correct |
102 ms |
16968 KB |
Output is correct |
59 |
Correct |
126 ms |
16916 KB |
Output is correct |
60 |
Correct |
102 ms |
17292 KB |
Output is correct |
61 |
Correct |
81 ms |
20928 KB |
Output is correct |
62 |
Correct |
80 ms |
20940 KB |
Output is correct |
63 |
Correct |
88 ms |
20896 KB |
Output is correct |
64 |
Correct |
98 ms |
21188 KB |
Output is correct |
65 |
Correct |
108 ms |
16868 KB |
Output is correct |
66 |
Correct |
114 ms |
17060 KB |
Output is correct |
67 |
Correct |
101 ms |
17304 KB |
Output is correct |
68 |
Correct |
65 ms |
17100 KB |
Output is correct |
69 |
Correct |
67 ms |
17212 KB |
Output is correct |
70 |
Correct |
89 ms |
21440 KB |
Output is correct |
71 |
Correct |
93 ms |
20812 KB |
Output is correct |
72 |
Correct |
2 ms |
2652 KB |
Output is correct |
73 |
Correct |
7 ms |
4060 KB |
Output is correct |
74 |
Correct |
6 ms |
4112 KB |
Output is correct |
75 |
Correct |
2 ms |
2668 KB |
Output is correct |
76 |
Correct |
2 ms |
2648 KB |
Output is correct |
77 |
Correct |
6 ms |
4568 KB |
Output is correct |
78 |
Correct |
6 ms |
4240 KB |
Output is correct |
79 |
Correct |
6 ms |
4096 KB |
Output is correct |
80 |
Correct |
6 ms |
4112 KB |
Output is correct |
81 |
Correct |
2 ms |
2644 KB |
Output is correct |
82 |
Correct |
2 ms |
2696 KB |
Output is correct |
83 |
Correct |
2 ms |
2644 KB |
Output is correct |
84 |
Correct |
2 ms |
2644 KB |
Output is correct |
85 |
Correct |
2 ms |
2728 KB |
Output is correct |
86 |
Correct |
28 ms |
4472 KB |
Output is correct |
87 |
Correct |
28 ms |
4472 KB |
Output is correct |
88 |
Correct |
31 ms |
4592 KB |
Output is correct |
89 |
Correct |
7 ms |
4564 KB |
Output is correct |
90 |
Correct |
6 ms |
4104 KB |
Output is correct |
91 |
Correct |
34 ms |
4612 KB |
Output is correct |
92 |
Correct |
38 ms |
4540 KB |
Output is correct |
93 |
Correct |
2 ms |
2644 KB |
Output is correct |
94 |
Correct |
106 ms |
25320 KB |
Output is correct |
95 |
Correct |
110 ms |
25032 KB |
Output is correct |
96 |
Correct |
97 ms |
24492 KB |
Output is correct |
97 |
Correct |
121 ms |
25516 KB |
Output is correct |
98 |
Correct |
104 ms |
25496 KB |
Output is correct |
99 |
Correct |
104 ms |
17032 KB |
Output is correct |
100 |
Correct |
99 ms |
16832 KB |
Output is correct |
101 |
Correct |
99 ms |
16892 KB |
Output is correct |
102 |
Correct |
102 ms |
17212 KB |
Output is correct |
103 |
Correct |
92 ms |
20556 KB |
Output is correct |
104 |
Correct |
95 ms |
20976 KB |
Output is correct |
105 |
Correct |
81 ms |
20520 KB |
Output is correct |
106 |
Correct |
91 ms |
21384 KB |
Output is correct |
107 |
Correct |
91 ms |
21140 KB |
Output is correct |
108 |
Correct |
99 ms |
25580 KB |
Output is correct |
109 |
Correct |
102 ms |
25540 KB |
Output is correct |
110 |
Correct |
81 ms |
17132 KB |
Output is correct |
111 |
Correct |
76 ms |
17028 KB |
Output is correct |
112 |
Correct |
100 ms |
17208 KB |
Output is correct |
113 |
Correct |
97 ms |
17236 KB |
Output is correct |