#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define pa pair<int, int>
#define pall pair<ll, int>
#define fi first
#define se second
#define TASK "test"
#define Size(x) (int) x.size()
#define all(x) x.begin(), x.end()
using namespace std;
template<typename T1, typename T2> bool mini (T1 &a, T2 b) {if(a > b) a = b; else return 0; return 1;}
template<typename T1, typename T2> bool maxi (T1 &a, T2 b) {if(a < b) a = b; else return 0; return 1;}
const int MOD = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 7;
const ll oo = 1e18 + 69;
int n, m, k, u, v, id[maxn], timer = 0, st[maxn], en[maxn], ex[maxn], res[maxn], edge_id[maxn];
vector<pa> g[maxn];
struct LCA {
int p[LOG][maxn], f[maxn];
void dfs(int u, int par) {
id[u] = ++timer;
p[0][u] = par;
for(auto e:g[u]) {
int v = e.fi;
if(v == par) continue;
f[v] = f[u] + 1;
dfs(v, u);
}
}
int get_lca(int u, int v) {
if(f[u] < f[v]) swap(u, v);
int k = f[u] - f[v];
for(int i = 0; i < LOG; i++)
if((k >> i) & 1) u = p[i][u];
if(u == v) return u;
for(int i = LOG - 1; i >= 0; i--)
if(p[i][u] != p[i][v]) {
u = p[i][u];
v = p[i][v];
}
return p[0][u];
}
void init() {
f[1] = 0;
dfs(1, 0);
for(int i = 1; i < LOG; i++) {
for(int u = 1; u <= n; u++) p[i][u] = p[i - 1][p[i - 1][u]];
}
}
int jump(int u, int k) {
for(int i = 0; i < LOG; i++)
if((k >> i) & 1) u = p[i][u];
return u;
}
void add(int u, int v) {
int par = get_lca(u, v);
st[u]++;
st[v]++;
en[par] += 2;
if(u != par && v != par) ex[par]++;
else {
st[par]--;
en[par]--;
}
}
void update(int u, int v) {
int par = get_lca(u, v);
if(u != par) add(u, jump(u, f[u] - f[par] - 1));
if(v != par) add(v, jump(v, f[v] - f[par] - 1));
}
} lca;
bool cmp(int a, int b) {
return id[a] < id[b];
}
void dfs(int u, int par) {
for(auto e:g[u]) {
int v = e.fi;
if(v == par) continue;
edge_id[v] = e.se;
dfs(v, u);
st[u] += st[v];
}
res[u] = st[u] - ex[u];
st[u] -= en[u];
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
//freopen(TASK".inp", "r", stdin);
//freopen(TASK".out", "w", stdout);
cin>>n>>m>>k;
for(int i = 1; i < n; i++) {
cin>>u>>v;
g[u].pb({v, i});
g[v].pb({u, i});
}
lca.init();
while(m--) {
cin>>u;
vector<int> a;
for(int i = 0; i < u; i++) {
cin>>v;
a.pb(v);
}
sort(all(a), cmp);
for(int i = 0; i < u; i++) {
int j = (i + 1) % u;
lca.update(a[i], a[j]);
}
}
dfs(1, 0);
vector<int> ans;
for(int i = 1; i <= n; i++) {
if(res[i] >= 2 * k) ans.pb(edge_id[i]);
}
cout<<Size(ans)<<"\n";
sort(all(ans));
for(auto i:ans) cout<<i<<" ";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2772 KB |
Output is correct |
2 |
Correct |
6 ms |
4248 KB |
Output is correct |
3 |
Correct |
6 ms |
4236 KB |
Output is correct |
4 |
Correct |
2 ms |
2692 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
7 ms |
4748 KB |
Output is correct |
7 |
Correct |
6 ms |
4308 KB |
Output is correct |
8 |
Correct |
6 ms |
4240 KB |
Output is correct |
9 |
Correct |
6 ms |
4236 KB |
Output is correct |
10 |
Correct |
2 ms |
2772 KB |
Output is correct |
11 |
Correct |
2 ms |
2772 KB |
Output is correct |
12 |
Correct |
2 ms |
2688 KB |
Output is correct |
13 |
Correct |
2 ms |
2772 KB |
Output is correct |
14 |
Correct |
2 ms |
2772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2772 KB |
Output is correct |
2 |
Correct |
6 ms |
4248 KB |
Output is correct |
3 |
Correct |
6 ms |
4236 KB |
Output is correct |
4 |
Correct |
2 ms |
2692 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
7 ms |
4748 KB |
Output is correct |
7 |
Correct |
6 ms |
4308 KB |
Output is correct |
8 |
Correct |
6 ms |
4240 KB |
Output is correct |
9 |
Correct |
6 ms |
4236 KB |
Output is correct |
10 |
Correct |
2 ms |
2772 KB |
Output is correct |
11 |
Correct |
2 ms |
2772 KB |
Output is correct |
12 |
Correct |
2 ms |
2688 KB |
Output is correct |
13 |
Correct |
2 ms |
2772 KB |
Output is correct |
14 |
Correct |
2 ms |
2772 KB |
Output is correct |
15 |
Correct |
31 ms |
4556 KB |
Output is correct |
16 |
Correct |
32 ms |
4688 KB |
Output is correct |
17 |
Correct |
29 ms |
4732 KB |
Output is correct |
18 |
Correct |
7 ms |
4692 KB |
Output is correct |
19 |
Correct |
8 ms |
4364 KB |
Output is correct |
20 |
Correct |
31 ms |
4812 KB |
Output is correct |
21 |
Correct |
43 ms |
4684 KB |
Output is correct |
22 |
Correct |
2 ms |
2684 KB |
Output is correct |
23 |
Correct |
6 ms |
4180 KB |
Output is correct |
24 |
Correct |
6 ms |
4236 KB |
Output is correct |
25 |
Correct |
2 ms |
2692 KB |
Output is correct |
26 |
Correct |
2 ms |
2772 KB |
Output is correct |
27 |
Correct |
6 ms |
4692 KB |
Output is correct |
28 |
Correct |
6 ms |
4308 KB |
Output is correct |
29 |
Correct |
5 ms |
4240 KB |
Output is correct |
30 |
Correct |
6 ms |
4236 KB |
Output is correct |
31 |
Correct |
2 ms |
2772 KB |
Output is correct |
32 |
Correct |
3 ms |
2772 KB |
Output is correct |
33 |
Correct |
2 ms |
2772 KB |
Output is correct |
34 |
Correct |
2 ms |
2772 KB |
Output is correct |
35 |
Correct |
2 ms |
2772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
102 ms |
26476 KB |
Output is correct |
2 |
Correct |
2 ms |
2772 KB |
Output is correct |
3 |
Correct |
110 ms |
26148 KB |
Output is correct |
4 |
Correct |
94 ms |
25592 KB |
Output is correct |
5 |
Correct |
118 ms |
26476 KB |
Output is correct |
6 |
Correct |
89 ms |
26808 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
73 ms |
21976 KB |
Output is correct |
2 |
Correct |
96 ms |
18476 KB |
Output is correct |
3 |
Correct |
114 ms |
18124 KB |
Output is correct |
4 |
Correct |
81 ms |
17880 KB |
Output is correct |
5 |
Correct |
114 ms |
18076 KB |
Output is correct |
6 |
Correct |
79 ms |
22092 KB |
Output is correct |
7 |
Correct |
81 ms |
22016 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
73 ms |
21976 KB |
Output is correct |
2 |
Correct |
96 ms |
18476 KB |
Output is correct |
3 |
Correct |
114 ms |
18124 KB |
Output is correct |
4 |
Correct |
81 ms |
17880 KB |
Output is correct |
5 |
Correct |
114 ms |
18076 KB |
Output is correct |
6 |
Correct |
79 ms |
22092 KB |
Output is correct |
7 |
Correct |
81 ms |
22016 KB |
Output is correct |
8 |
Correct |
84 ms |
22276 KB |
Output is correct |
9 |
Correct |
87 ms |
22244 KB |
Output is correct |
10 |
Correct |
81 ms |
26504 KB |
Output is correct |
11 |
Correct |
75 ms |
26548 KB |
Output is correct |
12 |
Correct |
85 ms |
18132 KB |
Output is correct |
13 |
Correct |
76 ms |
18044 KB |
Output is correct |
14 |
Correct |
91 ms |
18188 KB |
Output is correct |
15 |
Correct |
134 ms |
18284 KB |
Output is correct |
16 |
Correct |
102 ms |
17980 KB |
Output is correct |
17 |
Correct |
92 ms |
17924 KB |
Output is correct |
18 |
Correct |
88 ms |
17932 KB |
Output is correct |
19 |
Correct |
96 ms |
18492 KB |
Output is correct |
20 |
Correct |
102 ms |
22280 KB |
Output is correct |
21 |
Correct |
93 ms |
22524 KB |
Output is correct |
22 |
Correct |
85 ms |
22296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
2772 KB |
Output is correct |
2 |
Correct |
6 ms |
4248 KB |
Output is correct |
3 |
Correct |
6 ms |
4236 KB |
Output is correct |
4 |
Correct |
2 ms |
2692 KB |
Output is correct |
5 |
Correct |
2 ms |
2772 KB |
Output is correct |
6 |
Correct |
7 ms |
4748 KB |
Output is correct |
7 |
Correct |
6 ms |
4308 KB |
Output is correct |
8 |
Correct |
6 ms |
4240 KB |
Output is correct |
9 |
Correct |
6 ms |
4236 KB |
Output is correct |
10 |
Correct |
2 ms |
2772 KB |
Output is correct |
11 |
Correct |
2 ms |
2772 KB |
Output is correct |
12 |
Correct |
2 ms |
2688 KB |
Output is correct |
13 |
Correct |
2 ms |
2772 KB |
Output is correct |
14 |
Correct |
2 ms |
2772 KB |
Output is correct |
15 |
Correct |
31 ms |
4556 KB |
Output is correct |
16 |
Correct |
32 ms |
4688 KB |
Output is correct |
17 |
Correct |
29 ms |
4732 KB |
Output is correct |
18 |
Correct |
7 ms |
4692 KB |
Output is correct |
19 |
Correct |
8 ms |
4364 KB |
Output is correct |
20 |
Correct |
31 ms |
4812 KB |
Output is correct |
21 |
Correct |
43 ms |
4684 KB |
Output is correct |
22 |
Correct |
2 ms |
2684 KB |
Output is correct |
23 |
Correct |
6 ms |
4180 KB |
Output is correct |
24 |
Correct |
6 ms |
4236 KB |
Output is correct |
25 |
Correct |
2 ms |
2692 KB |
Output is correct |
26 |
Correct |
2 ms |
2772 KB |
Output is correct |
27 |
Correct |
6 ms |
4692 KB |
Output is correct |
28 |
Correct |
6 ms |
4308 KB |
Output is correct |
29 |
Correct |
5 ms |
4240 KB |
Output is correct |
30 |
Correct |
6 ms |
4236 KB |
Output is correct |
31 |
Correct |
2 ms |
2772 KB |
Output is correct |
32 |
Correct |
3 ms |
2772 KB |
Output is correct |
33 |
Correct |
2 ms |
2772 KB |
Output is correct |
34 |
Correct |
2 ms |
2772 KB |
Output is correct |
35 |
Correct |
2 ms |
2772 KB |
Output is correct |
36 |
Correct |
102 ms |
26476 KB |
Output is correct |
37 |
Correct |
2 ms |
2772 KB |
Output is correct |
38 |
Correct |
110 ms |
26148 KB |
Output is correct |
39 |
Correct |
94 ms |
25592 KB |
Output is correct |
40 |
Correct |
118 ms |
26476 KB |
Output is correct |
41 |
Correct |
89 ms |
26808 KB |
Output is correct |
42 |
Correct |
73 ms |
21976 KB |
Output is correct |
43 |
Correct |
96 ms |
18476 KB |
Output is correct |
44 |
Correct |
114 ms |
18124 KB |
Output is correct |
45 |
Correct |
81 ms |
17880 KB |
Output is correct |
46 |
Correct |
114 ms |
18076 KB |
Output is correct |
47 |
Correct |
79 ms |
22092 KB |
Output is correct |
48 |
Correct |
81 ms |
22016 KB |
Output is correct |
49 |
Correct |
84 ms |
22276 KB |
Output is correct |
50 |
Correct |
87 ms |
22244 KB |
Output is correct |
51 |
Correct |
81 ms |
26504 KB |
Output is correct |
52 |
Correct |
75 ms |
26548 KB |
Output is correct |
53 |
Correct |
85 ms |
18132 KB |
Output is correct |
54 |
Correct |
76 ms |
18044 KB |
Output is correct |
55 |
Correct |
91 ms |
18188 KB |
Output is correct |
56 |
Correct |
134 ms |
18284 KB |
Output is correct |
57 |
Correct |
102 ms |
17980 KB |
Output is correct |
58 |
Correct |
92 ms |
17924 KB |
Output is correct |
59 |
Correct |
88 ms |
17932 KB |
Output is correct |
60 |
Correct |
96 ms |
18492 KB |
Output is correct |
61 |
Correct |
102 ms |
22280 KB |
Output is correct |
62 |
Correct |
93 ms |
22524 KB |
Output is correct |
63 |
Correct |
85 ms |
22296 KB |
Output is correct |
64 |
Correct |
81 ms |
22380 KB |
Output is correct |
65 |
Correct |
125 ms |
18168 KB |
Output is correct |
66 |
Correct |
105 ms |
18252 KB |
Output is correct |
67 |
Correct |
101 ms |
18196 KB |
Output is correct |
68 |
Correct |
66 ms |
18052 KB |
Output is correct |
69 |
Correct |
60 ms |
18056 KB |
Output is correct |
70 |
Correct |
100 ms |
22728 KB |
Output is correct |
71 |
Correct |
91 ms |
22024 KB |
Output is correct |
72 |
Correct |
2 ms |
2688 KB |
Output is correct |
73 |
Correct |
6 ms |
4236 KB |
Output is correct |
74 |
Correct |
7 ms |
4180 KB |
Output is correct |
75 |
Correct |
2 ms |
2684 KB |
Output is correct |
76 |
Correct |
2 ms |
2772 KB |
Output is correct |
77 |
Correct |
6 ms |
4744 KB |
Output is correct |
78 |
Correct |
6 ms |
4308 KB |
Output is correct |
79 |
Correct |
6 ms |
4240 KB |
Output is correct |
80 |
Correct |
6 ms |
4308 KB |
Output is correct |
81 |
Correct |
2 ms |
2684 KB |
Output is correct |
82 |
Correct |
2 ms |
2772 KB |
Output is correct |
83 |
Correct |
2 ms |
2772 KB |
Output is correct |
84 |
Correct |
2 ms |
2772 KB |
Output is correct |
85 |
Correct |
2 ms |
2772 KB |
Output is correct |
86 |
Correct |
29 ms |
4612 KB |
Output is correct |
87 |
Correct |
31 ms |
4684 KB |
Output is correct |
88 |
Correct |
29 ms |
4684 KB |
Output is correct |
89 |
Correct |
7 ms |
4616 KB |
Output is correct |
90 |
Correct |
6 ms |
4356 KB |
Output is correct |
91 |
Correct |
32 ms |
4776 KB |
Output is correct |
92 |
Correct |
38 ms |
4684 KB |
Output is correct |
93 |
Correct |
2 ms |
2692 KB |
Output is correct |
94 |
Correct |
128 ms |
26496 KB |
Output is correct |
95 |
Correct |
97 ms |
26184 KB |
Output is correct |
96 |
Correct |
94 ms |
25600 KB |
Output is correct |
97 |
Correct |
92 ms |
26476 KB |
Output is correct |
98 |
Correct |
101 ms |
26832 KB |
Output is correct |
99 |
Correct |
88 ms |
17968 KB |
Output is correct |
100 |
Correct |
94 ms |
18104 KB |
Output is correct |
101 |
Correct |
103 ms |
17904 KB |
Output is correct |
102 |
Correct |
88 ms |
18516 KB |
Output is correct |
103 |
Correct |
83 ms |
21980 KB |
Output is correct |
104 |
Correct |
80 ms |
22344 KB |
Output is correct |
105 |
Correct |
85 ms |
22032 KB |
Output is correct |
106 |
Correct |
86 ms |
22396 KB |
Output is correct |
107 |
Correct |
82 ms |
22212 KB |
Output is correct |
108 |
Correct |
86 ms |
26492 KB |
Output is correct |
109 |
Correct |
82 ms |
26500 KB |
Output is correct |
110 |
Correct |
78 ms |
18056 KB |
Output is correct |
111 |
Correct |
78 ms |
18124 KB |
Output is correct |
112 |
Correct |
110 ms |
18172 KB |
Output is correct |
113 |
Correct |
92 ms |
18204 KB |
Output is correct |