# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
502225 |
2022-01-05T14:38:54 Z |
Lobo |
Railway (BOI17_railway) |
C++17 |
|
150 ms |
29432 KB |
#include<bits/stdc++.h>
using namespace std;
/*for ordered_set
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<pair<int,int>, null_type,less<pair<int,int>>, rb_tree_tag,tree_order_statistics_node_update>
*/
const long long INFll = (long long) 1e18 + 10;
const int INFii = (int) 1e9 + 10;
typedef long long ll;
typedef int ii;
typedef long double dbl;
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define maxn 110000
ii n, m, k, cnt[maxn], p[maxn][25], ps[maxn], h[maxn];
vector<pair<ii,ii>> edg, g[maxn];
ii tin[maxn], timer = 1;
ii lca(ii u, ii v) {
if(h[u] < h[v]) swap(u,v);
for(ii i = 20; i >= 0; i--) {
if(h[p[u][i]] >= h[v]) {
u = p[u][i];
}
}
if(u == v) {
return u;
}
for(ii i = 20; i >= 0; i--) {
if(p[u][i] != p[v][i]) {
u = p[u][i];
v = p[v][i];
}
}
return p[u][0];
}
void dfslca(ii u, ii ant, ii id) {
//.fr = pai .sc = filho
if(u != 1 && edg[id].fr == u) swap(edg[id].fr,edg[id].sc);
tin[u] = timer++;
p[u][0] = ant;
for(ii i = 1; i <= 20; i++) {
p[u][i] = p[p[u][i-1]][i-1];
}
for(auto V : g[u]) {
ii v = V.fr;
ii id1 = V.sc;
if(v == ant) continue;
h[v] = h[u]+1;
dfslca(v,u,id1);
}
}
void dfsps(ii u, ii ant) {
for(auto V : g[u]) {
ii v = V.fr;
if(v == ant) continue;
dfsps(v,u);
ps[u]+= ps[v];
}
}
void solve() {
cin >> n >> m >> k;
for(ii i = 0; i < n-1; i++) {
ii a, b;
cin >> a >> b;
g[a].pb(mp(b,i));
g[b].pb(mp(a,i));
edg.pb(mp(a,b));
}
h[1] = 0;
dfslca(1,1,0);
while(m--) {
ii s; cin >> s;
vector<pair<ii,ii>> vert;
for(ii i = 0; i < s; i++) {
ii u; cin >> u;
vert.pb(mp(tin[u],u));
}
sort(all(vert));
for(ii i = 0; i < s; i++) {
ii u = vert[i].sc;
ii v = vert[(i+1)%s].sc;
ii lc = lca(u,v);
ps[u]++;
ps[v]++;
ps[lc]-= 2;
}
}
dfsps(1,1);
for(ii i = 0; i < n-1; i++) {
ii v = edg[i].sc;
cnt[i] = ps[v]/2;
}
vector<ii> ans;
for(ii i = 0; i < n-1; i++) {
if(cnt[i] >= k) ans.pb(i+1);
}
cout << ans.size() << endl;
for(auto x : ans) cout << x << " ";
cout << endl;
}
int main() {
ios::sync_with_stdio(false); cin.tie(0);
// freopen("in.in", "r", stdin);
//freopen("out.out", "w", stdout);
ii tt = 1;
// cin >> tt;
while(tt--) solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2892 KB |
Output is correct |
2 |
Correct |
7 ms |
4428 KB |
Output is correct |
3 |
Correct |
6 ms |
4428 KB |
Output is correct |
4 |
Correct |
2 ms |
2892 KB |
Output is correct |
5 |
Correct |
2 ms |
2892 KB |
Output is correct |
6 |
Correct |
7 ms |
4940 KB |
Output is correct |
7 |
Correct |
6 ms |
4556 KB |
Output is correct |
8 |
Correct |
5 ms |
4556 KB |
Output is correct |
9 |
Correct |
6 ms |
4548 KB |
Output is correct |
10 |
Correct |
2 ms |
2892 KB |
Output is correct |
11 |
Correct |
2 ms |
2892 KB |
Output is correct |
12 |
Correct |
2 ms |
2892 KB |
Output is correct |
13 |
Correct |
2 ms |
2892 KB |
Output is correct |
14 |
Correct |
1 ms |
2892 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2892 KB |
Output is correct |
2 |
Correct |
7 ms |
4428 KB |
Output is correct |
3 |
Correct |
6 ms |
4428 KB |
Output is correct |
4 |
Correct |
2 ms |
2892 KB |
Output is correct |
5 |
Correct |
2 ms |
2892 KB |
Output is correct |
6 |
Correct |
7 ms |
4940 KB |
Output is correct |
7 |
Correct |
6 ms |
4556 KB |
Output is correct |
8 |
Correct |
5 ms |
4556 KB |
Output is correct |
9 |
Correct |
6 ms |
4548 KB |
Output is correct |
10 |
Correct |
2 ms |
2892 KB |
Output is correct |
11 |
Correct |
2 ms |
2892 KB |
Output is correct |
12 |
Correct |
2 ms |
2892 KB |
Output is correct |
13 |
Correct |
2 ms |
2892 KB |
Output is correct |
14 |
Correct |
1 ms |
2892 KB |
Output is correct |
15 |
Correct |
30 ms |
4476 KB |
Output is correct |
16 |
Correct |
39 ms |
4484 KB |
Output is correct |
17 |
Correct |
30 ms |
4548 KB |
Output is correct |
18 |
Correct |
7 ms |
4940 KB |
Output is correct |
19 |
Correct |
6 ms |
4608 KB |
Output is correct |
20 |
Correct |
36 ms |
4580 KB |
Output is correct |
21 |
Correct |
33 ms |
4512 KB |
Output is correct |
22 |
Correct |
2 ms |
2892 KB |
Output is correct |
23 |
Correct |
6 ms |
4448 KB |
Output is correct |
24 |
Correct |
6 ms |
4428 KB |
Output is correct |
25 |
Correct |
2 ms |
2892 KB |
Output is correct |
26 |
Correct |
1 ms |
2892 KB |
Output is correct |
27 |
Correct |
8 ms |
4940 KB |
Output is correct |
28 |
Correct |
10 ms |
4556 KB |
Output is correct |
29 |
Correct |
6 ms |
4556 KB |
Output is correct |
30 |
Correct |
8 ms |
4528 KB |
Output is correct |
31 |
Correct |
2 ms |
2892 KB |
Output is correct |
32 |
Correct |
2 ms |
2892 KB |
Output is correct |
33 |
Correct |
2 ms |
2892 KB |
Output is correct |
34 |
Correct |
2 ms |
2892 KB |
Output is correct |
35 |
Correct |
2 ms |
2812 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
117 ms |
27252 KB |
Output is correct |
2 |
Correct |
2 ms |
2892 KB |
Output is correct |
3 |
Correct |
105 ms |
26600 KB |
Output is correct |
4 |
Correct |
127 ms |
25968 KB |
Output is correct |
5 |
Correct |
150 ms |
27348 KB |
Output is correct |
6 |
Correct |
122 ms |
27376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
84 ms |
22484 KB |
Output is correct |
2 |
Correct |
101 ms |
19080 KB |
Output is correct |
3 |
Correct |
112 ms |
18784 KB |
Output is correct |
4 |
Correct |
105 ms |
18724 KB |
Output is correct |
5 |
Correct |
98 ms |
18764 KB |
Output is correct |
6 |
Correct |
83 ms |
22708 KB |
Output is correct |
7 |
Correct |
84 ms |
22608 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
84 ms |
22484 KB |
Output is correct |
2 |
Correct |
101 ms |
19080 KB |
Output is correct |
3 |
Correct |
112 ms |
18784 KB |
Output is correct |
4 |
Correct |
105 ms |
18724 KB |
Output is correct |
5 |
Correct |
98 ms |
18764 KB |
Output is correct |
6 |
Correct |
83 ms |
22708 KB |
Output is correct |
7 |
Correct |
84 ms |
22608 KB |
Output is correct |
8 |
Correct |
96 ms |
22664 KB |
Output is correct |
9 |
Correct |
100 ms |
24536 KB |
Output is correct |
10 |
Correct |
101 ms |
29132 KB |
Output is correct |
11 |
Correct |
103 ms |
29040 KB |
Output is correct |
12 |
Correct |
78 ms |
20272 KB |
Output is correct |
13 |
Correct |
94 ms |
20280 KB |
Output is correct |
14 |
Correct |
108 ms |
20476 KB |
Output is correct |
15 |
Correct |
102 ms |
20408 KB |
Output is correct |
16 |
Correct |
105 ms |
20536 KB |
Output is correct |
17 |
Correct |
107 ms |
20528 KB |
Output is correct |
18 |
Correct |
102 ms |
20460 KB |
Output is correct |
19 |
Correct |
100 ms |
20880 KB |
Output is correct |
20 |
Correct |
89 ms |
24700 KB |
Output is correct |
21 |
Correct |
92 ms |
24908 KB |
Output is correct |
22 |
Correct |
86 ms |
24760 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
2892 KB |
Output is correct |
2 |
Correct |
7 ms |
4428 KB |
Output is correct |
3 |
Correct |
6 ms |
4428 KB |
Output is correct |
4 |
Correct |
2 ms |
2892 KB |
Output is correct |
5 |
Correct |
2 ms |
2892 KB |
Output is correct |
6 |
Correct |
7 ms |
4940 KB |
Output is correct |
7 |
Correct |
6 ms |
4556 KB |
Output is correct |
8 |
Correct |
5 ms |
4556 KB |
Output is correct |
9 |
Correct |
6 ms |
4548 KB |
Output is correct |
10 |
Correct |
2 ms |
2892 KB |
Output is correct |
11 |
Correct |
2 ms |
2892 KB |
Output is correct |
12 |
Correct |
2 ms |
2892 KB |
Output is correct |
13 |
Correct |
2 ms |
2892 KB |
Output is correct |
14 |
Correct |
1 ms |
2892 KB |
Output is correct |
15 |
Correct |
30 ms |
4476 KB |
Output is correct |
16 |
Correct |
39 ms |
4484 KB |
Output is correct |
17 |
Correct |
30 ms |
4548 KB |
Output is correct |
18 |
Correct |
7 ms |
4940 KB |
Output is correct |
19 |
Correct |
6 ms |
4608 KB |
Output is correct |
20 |
Correct |
36 ms |
4580 KB |
Output is correct |
21 |
Correct |
33 ms |
4512 KB |
Output is correct |
22 |
Correct |
2 ms |
2892 KB |
Output is correct |
23 |
Correct |
6 ms |
4448 KB |
Output is correct |
24 |
Correct |
6 ms |
4428 KB |
Output is correct |
25 |
Correct |
2 ms |
2892 KB |
Output is correct |
26 |
Correct |
1 ms |
2892 KB |
Output is correct |
27 |
Correct |
8 ms |
4940 KB |
Output is correct |
28 |
Correct |
10 ms |
4556 KB |
Output is correct |
29 |
Correct |
6 ms |
4556 KB |
Output is correct |
30 |
Correct |
8 ms |
4528 KB |
Output is correct |
31 |
Correct |
2 ms |
2892 KB |
Output is correct |
32 |
Correct |
2 ms |
2892 KB |
Output is correct |
33 |
Correct |
2 ms |
2892 KB |
Output is correct |
34 |
Correct |
2 ms |
2892 KB |
Output is correct |
35 |
Correct |
2 ms |
2812 KB |
Output is correct |
36 |
Correct |
117 ms |
27252 KB |
Output is correct |
37 |
Correct |
2 ms |
2892 KB |
Output is correct |
38 |
Correct |
105 ms |
26600 KB |
Output is correct |
39 |
Correct |
127 ms |
25968 KB |
Output is correct |
40 |
Correct |
150 ms |
27348 KB |
Output is correct |
41 |
Correct |
122 ms |
27376 KB |
Output is correct |
42 |
Correct |
84 ms |
22484 KB |
Output is correct |
43 |
Correct |
101 ms |
19080 KB |
Output is correct |
44 |
Correct |
112 ms |
18784 KB |
Output is correct |
45 |
Correct |
105 ms |
18724 KB |
Output is correct |
46 |
Correct |
98 ms |
18764 KB |
Output is correct |
47 |
Correct |
83 ms |
22708 KB |
Output is correct |
48 |
Correct |
84 ms |
22608 KB |
Output is correct |
49 |
Correct |
96 ms |
22664 KB |
Output is correct |
50 |
Correct |
100 ms |
24536 KB |
Output is correct |
51 |
Correct |
101 ms |
29132 KB |
Output is correct |
52 |
Correct |
103 ms |
29040 KB |
Output is correct |
53 |
Correct |
78 ms |
20272 KB |
Output is correct |
54 |
Correct |
94 ms |
20280 KB |
Output is correct |
55 |
Correct |
108 ms |
20476 KB |
Output is correct |
56 |
Correct |
102 ms |
20408 KB |
Output is correct |
57 |
Correct |
105 ms |
20536 KB |
Output is correct |
58 |
Correct |
107 ms |
20528 KB |
Output is correct |
59 |
Correct |
102 ms |
20460 KB |
Output is correct |
60 |
Correct |
100 ms |
20880 KB |
Output is correct |
61 |
Correct |
89 ms |
24700 KB |
Output is correct |
62 |
Correct |
92 ms |
24908 KB |
Output is correct |
63 |
Correct |
86 ms |
24760 KB |
Output is correct |
64 |
Correct |
106 ms |
24796 KB |
Output is correct |
65 |
Correct |
124 ms |
20668 KB |
Output is correct |
66 |
Correct |
110 ms |
20440 KB |
Output is correct |
67 |
Correct |
117 ms |
20532 KB |
Output is correct |
68 |
Correct |
80 ms |
20268 KB |
Output is correct |
69 |
Correct |
73 ms |
20268 KB |
Output is correct |
70 |
Correct |
110 ms |
25192 KB |
Output is correct |
71 |
Correct |
104 ms |
24280 KB |
Output is correct |
72 |
Correct |
2 ms |
2912 KB |
Output is correct |
73 |
Correct |
7 ms |
4552 KB |
Output is correct |
74 |
Correct |
7 ms |
4548 KB |
Output is correct |
75 |
Correct |
2 ms |
2892 KB |
Output is correct |
76 |
Correct |
2 ms |
2896 KB |
Output is correct |
77 |
Correct |
6 ms |
4976 KB |
Output is correct |
78 |
Correct |
7 ms |
4684 KB |
Output is correct |
79 |
Correct |
6 ms |
4556 KB |
Output is correct |
80 |
Correct |
6 ms |
4556 KB |
Output is correct |
81 |
Correct |
2 ms |
2892 KB |
Output is correct |
82 |
Correct |
2 ms |
2892 KB |
Output is correct |
83 |
Correct |
2 ms |
2908 KB |
Output is correct |
84 |
Correct |
2 ms |
2892 KB |
Output is correct |
85 |
Correct |
2 ms |
2892 KB |
Output is correct |
86 |
Correct |
29 ms |
4956 KB |
Output is correct |
87 |
Correct |
28 ms |
4984 KB |
Output is correct |
88 |
Correct |
31 ms |
4952 KB |
Output is correct |
89 |
Correct |
7 ms |
4992 KB |
Output is correct |
90 |
Correct |
9 ms |
4684 KB |
Output is correct |
91 |
Correct |
33 ms |
5112 KB |
Output is correct |
92 |
Correct |
40 ms |
5000 KB |
Output is correct |
93 |
Correct |
2 ms |
2908 KB |
Output is correct |
94 |
Correct |
107 ms |
29024 KB |
Output is correct |
95 |
Correct |
111 ms |
28464 KB |
Output is correct |
96 |
Correct |
149 ms |
27728 KB |
Output is correct |
97 |
Correct |
122 ms |
29020 KB |
Output is correct |
98 |
Correct |
114 ms |
29432 KB |
Output is correct |
99 |
Correct |
108 ms |
20520 KB |
Output is correct |
100 |
Correct |
112 ms |
20572 KB |
Output is correct |
101 |
Correct |
109 ms |
20540 KB |
Output is correct |
102 |
Correct |
112 ms |
20928 KB |
Output is correct |
103 |
Correct |
108 ms |
24428 KB |
Output is correct |
104 |
Correct |
97 ms |
24908 KB |
Output is correct |
105 |
Correct |
86 ms |
24328 KB |
Output is correct |
106 |
Correct |
122 ms |
24660 KB |
Output is correct |
107 |
Correct |
103 ms |
24440 KB |
Output is correct |
108 |
Correct |
103 ms |
29108 KB |
Output is correct |
109 |
Correct |
102 ms |
29144 KB |
Output is correct |
110 |
Correct |
83 ms |
20256 KB |
Output is correct |
111 |
Correct |
93 ms |
20444 KB |
Output is correct |
112 |
Correct |
109 ms |
20488 KB |
Output is correct |
113 |
Correct |
100 ms |
20412 KB |
Output is correct |