# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
639851 |
2022-09-12T11:49:22 Z |
Cookie |
Railway (BOI17_railway) |
C++14 |
|
241 ms |
45672 KB |
#include<bits/stdc++.h>
using namespace std;
#include<fstream>
#define ll long long
#define vt vector
#define pb push_back
#define fi first
#define se second
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
typedef unsigned long long ull;
#define pii pair<int, int>
#define pll pair<ll, ll>
#include<fstream>
ifstream fin("disrupt.in");
ofstream fout("disrupt.out");
const ll mod = 1e9 + 7;
const int mxn = 1e5, mxm = 5e4, mxlg = 17;
const int inf = 1e9 + 3;
int n, m, k;
vt<pii>adj[mxn + 1];
int cnt[mxn + 1];
set<int>val[mxn + 1];
int up[mxn + 1][17], d[mxn + 1];
vt<int>Lca[mxn + 1];
vt<int>res;
void dfs(int s, int pre){
for(auto i: adj[s]){
if(i.fi == pre)continue;
d[i.fi] = d[s] + 1; up[i.fi][0] = s;
dfs(i.fi, s);
}
}
int lca(int a, int b){
if(d[a] < d[b])swap(a, b);
int k = d[a] - d[b];
forr(i, 0, mxlg){
if(k & (1 << i)){
a = up[a][i];
}
}
if(a == b)return(a);
dorr(i, mxlg - 1, 0){
if(up[a][i] != up[b][i]){
a = up[a][i]; b = up[b][i];
}
}
return(up[a][0]);
}
void dfs2(int s, int pre){
for(auto i: adj[s]){
int v = i.fi, id = i.se;
if(v == pre)continue;
dfs2(v, s);
if(val[v].size() >= k){
res.pb(id);
}
if(val[s].size() < val[v].size())swap(val[s], val[v]);
for(auto j: val[v]){
val[s].insert(j);
}
}
for(auto i: Lca[s]){
val[s].erase(i);
}
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m >> k;
forr(i, 1, n){
int u, v; cin >> u >> v;
adj[u].pb({v, i}); adj[v].pb({u, i});
}
dfs(1, -1);
forr(i, 1, mxlg){
forr(j, 1, n + 1){
up[j][i] = up[up[j][i - 1]][i - 1];
}
}
forr(i, 0, m){
int s, v; cin >> s >> v;
val[v].insert(i);
forr(j, 1, s){
int x; cin >> x;
val[x].insert(i);
v = lca(v, x);
}
Lca[v].pb(i);
}
dfs2(1, -1);
cout << res.size() << "\n";
sort(res.begin(), res.end());
for(int i = 0 ; i < res.size(); i++)cout << res[i] << ' ';
}
Compilation message
railway.cpp: In function 'void dfs2(int, int)':
railway.cpp:60:26: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
60 | if(val[v].size() >= k){
| ~~~~~~~~~~~~~~^~~~
railway.cpp: In function 'int main()':
railway.cpp:101:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
101 | for(int i = 0 ; i < res.size(); i++)cout << res[i] << ' ';
| ~~^~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9740 KB |
Output is correct |
2 |
Correct |
10 ms |
10964 KB |
Output is correct |
3 |
Correct |
12 ms |
10964 KB |
Output is correct |
4 |
Correct |
6 ms |
9636 KB |
Output is correct |
5 |
Correct |
6 ms |
9744 KB |
Output is correct |
6 |
Correct |
14 ms |
11880 KB |
Output is correct |
7 |
Correct |
12 ms |
11164 KB |
Output is correct |
8 |
Correct |
10 ms |
11084 KB |
Output is correct |
9 |
Correct |
10 ms |
11164 KB |
Output is correct |
10 |
Correct |
5 ms |
9748 KB |
Output is correct |
11 |
Correct |
6 ms |
9684 KB |
Output is correct |
12 |
Correct |
6 ms |
9756 KB |
Output is correct |
13 |
Correct |
7 ms |
9740 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9740 KB |
Output is correct |
2 |
Correct |
10 ms |
10964 KB |
Output is correct |
3 |
Correct |
12 ms |
10964 KB |
Output is correct |
4 |
Correct |
6 ms |
9636 KB |
Output is correct |
5 |
Correct |
6 ms |
9744 KB |
Output is correct |
6 |
Correct |
14 ms |
11880 KB |
Output is correct |
7 |
Correct |
12 ms |
11164 KB |
Output is correct |
8 |
Correct |
10 ms |
11084 KB |
Output is correct |
9 |
Correct |
10 ms |
11164 KB |
Output is correct |
10 |
Correct |
5 ms |
9748 KB |
Output is correct |
11 |
Correct |
6 ms |
9684 KB |
Output is correct |
12 |
Correct |
6 ms |
9756 KB |
Output is correct |
13 |
Correct |
7 ms |
9740 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
15 |
Correct |
48 ms |
16720 KB |
Output is correct |
16 |
Correct |
48 ms |
16820 KB |
Output is correct |
17 |
Correct |
46 ms |
16888 KB |
Output is correct |
18 |
Correct |
11 ms |
11988 KB |
Output is correct |
19 |
Correct |
12 ms |
11220 KB |
Output is correct |
20 |
Correct |
44 ms |
16180 KB |
Output is correct |
21 |
Correct |
56 ms |
16140 KB |
Output is correct |
22 |
Correct |
7 ms |
9688 KB |
Output is correct |
23 |
Correct |
13 ms |
11048 KB |
Output is correct |
24 |
Correct |
10 ms |
10964 KB |
Output is correct |
25 |
Correct |
5 ms |
9684 KB |
Output is correct |
26 |
Correct |
5 ms |
9684 KB |
Output is correct |
27 |
Correct |
10 ms |
11860 KB |
Output is correct |
28 |
Correct |
9 ms |
11092 KB |
Output is correct |
29 |
Correct |
10 ms |
11036 KB |
Output is correct |
30 |
Correct |
9 ms |
11092 KB |
Output is correct |
31 |
Correct |
7 ms |
9744 KB |
Output is correct |
32 |
Correct |
5 ms |
9712 KB |
Output is correct |
33 |
Correct |
8 ms |
9684 KB |
Output is correct |
34 |
Correct |
8 ms |
9684 KB |
Output is correct |
35 |
Correct |
7 ms |
9684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
172 ms |
45208 KB |
Output is correct |
2 |
Correct |
5 ms |
9732 KB |
Output is correct |
3 |
Correct |
161 ms |
44932 KB |
Output is correct |
4 |
Correct |
156 ms |
44356 KB |
Output is correct |
5 |
Correct |
146 ms |
43308 KB |
Output is correct |
6 |
Correct |
126 ms |
45672 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
135 ms |
37556 KB |
Output is correct |
2 |
Correct |
159 ms |
32444 KB |
Output is correct |
3 |
Correct |
191 ms |
37940 KB |
Output is correct |
4 |
Correct |
220 ms |
37808 KB |
Output is correct |
5 |
Correct |
175 ms |
37992 KB |
Output is correct |
6 |
Correct |
150 ms |
37772 KB |
Output is correct |
7 |
Correct |
130 ms |
37708 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
135 ms |
37556 KB |
Output is correct |
2 |
Correct |
159 ms |
32444 KB |
Output is correct |
3 |
Correct |
191 ms |
37940 KB |
Output is correct |
4 |
Correct |
220 ms |
37808 KB |
Output is correct |
5 |
Correct |
175 ms |
37992 KB |
Output is correct |
6 |
Correct |
150 ms |
37772 KB |
Output is correct |
7 |
Correct |
130 ms |
37708 KB |
Output is correct |
8 |
Correct |
122 ms |
36456 KB |
Output is correct |
9 |
Correct |
131 ms |
36288 KB |
Output is correct |
10 |
Correct |
104 ms |
43072 KB |
Output is correct |
11 |
Correct |
107 ms |
43028 KB |
Output is correct |
12 |
Correct |
94 ms |
26788 KB |
Output is correct |
13 |
Correct |
114 ms |
26700 KB |
Output is correct |
14 |
Correct |
152 ms |
32844 KB |
Output is correct |
15 |
Correct |
142 ms |
33032 KB |
Output is correct |
16 |
Correct |
156 ms |
38960 KB |
Output is correct |
17 |
Correct |
192 ms |
39264 KB |
Output is correct |
18 |
Correct |
167 ms |
37064 KB |
Output is correct |
19 |
Correct |
147 ms |
32984 KB |
Output is correct |
20 |
Correct |
139 ms |
37988 KB |
Output is correct |
21 |
Correct |
133 ms |
38008 KB |
Output is correct |
22 |
Correct |
131 ms |
37984 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9740 KB |
Output is correct |
2 |
Correct |
10 ms |
10964 KB |
Output is correct |
3 |
Correct |
12 ms |
10964 KB |
Output is correct |
4 |
Correct |
6 ms |
9636 KB |
Output is correct |
5 |
Correct |
6 ms |
9744 KB |
Output is correct |
6 |
Correct |
14 ms |
11880 KB |
Output is correct |
7 |
Correct |
12 ms |
11164 KB |
Output is correct |
8 |
Correct |
10 ms |
11084 KB |
Output is correct |
9 |
Correct |
10 ms |
11164 KB |
Output is correct |
10 |
Correct |
5 ms |
9748 KB |
Output is correct |
11 |
Correct |
6 ms |
9684 KB |
Output is correct |
12 |
Correct |
6 ms |
9756 KB |
Output is correct |
13 |
Correct |
7 ms |
9740 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
15 |
Correct |
48 ms |
16720 KB |
Output is correct |
16 |
Correct |
48 ms |
16820 KB |
Output is correct |
17 |
Correct |
46 ms |
16888 KB |
Output is correct |
18 |
Correct |
11 ms |
11988 KB |
Output is correct |
19 |
Correct |
12 ms |
11220 KB |
Output is correct |
20 |
Correct |
44 ms |
16180 KB |
Output is correct |
21 |
Correct |
56 ms |
16140 KB |
Output is correct |
22 |
Correct |
7 ms |
9688 KB |
Output is correct |
23 |
Correct |
13 ms |
11048 KB |
Output is correct |
24 |
Correct |
10 ms |
10964 KB |
Output is correct |
25 |
Correct |
5 ms |
9684 KB |
Output is correct |
26 |
Correct |
5 ms |
9684 KB |
Output is correct |
27 |
Correct |
10 ms |
11860 KB |
Output is correct |
28 |
Correct |
9 ms |
11092 KB |
Output is correct |
29 |
Correct |
10 ms |
11036 KB |
Output is correct |
30 |
Correct |
9 ms |
11092 KB |
Output is correct |
31 |
Correct |
7 ms |
9744 KB |
Output is correct |
32 |
Correct |
5 ms |
9712 KB |
Output is correct |
33 |
Correct |
8 ms |
9684 KB |
Output is correct |
34 |
Correct |
8 ms |
9684 KB |
Output is correct |
35 |
Correct |
7 ms |
9684 KB |
Output is correct |
36 |
Correct |
172 ms |
45208 KB |
Output is correct |
37 |
Correct |
5 ms |
9732 KB |
Output is correct |
38 |
Correct |
161 ms |
44932 KB |
Output is correct |
39 |
Correct |
156 ms |
44356 KB |
Output is correct |
40 |
Correct |
146 ms |
43308 KB |
Output is correct |
41 |
Correct |
126 ms |
45672 KB |
Output is correct |
42 |
Correct |
135 ms |
37556 KB |
Output is correct |
43 |
Correct |
159 ms |
32444 KB |
Output is correct |
44 |
Correct |
191 ms |
37940 KB |
Output is correct |
45 |
Correct |
220 ms |
37808 KB |
Output is correct |
46 |
Correct |
175 ms |
37992 KB |
Output is correct |
47 |
Correct |
150 ms |
37772 KB |
Output is correct |
48 |
Correct |
130 ms |
37708 KB |
Output is correct |
49 |
Correct |
122 ms |
36456 KB |
Output is correct |
50 |
Correct |
131 ms |
36288 KB |
Output is correct |
51 |
Correct |
104 ms |
43072 KB |
Output is correct |
52 |
Correct |
107 ms |
43028 KB |
Output is correct |
53 |
Correct |
94 ms |
26788 KB |
Output is correct |
54 |
Correct |
114 ms |
26700 KB |
Output is correct |
55 |
Correct |
152 ms |
32844 KB |
Output is correct |
56 |
Correct |
142 ms |
33032 KB |
Output is correct |
57 |
Correct |
156 ms |
38960 KB |
Output is correct |
58 |
Correct |
192 ms |
39264 KB |
Output is correct |
59 |
Correct |
167 ms |
37064 KB |
Output is correct |
60 |
Correct |
147 ms |
32984 KB |
Output is correct |
61 |
Correct |
139 ms |
37988 KB |
Output is correct |
62 |
Correct |
133 ms |
38008 KB |
Output is correct |
63 |
Correct |
131 ms |
37984 KB |
Output is correct |
64 |
Correct |
121 ms |
36848 KB |
Output is correct |
65 |
Correct |
241 ms |
44504 KB |
Output is correct |
66 |
Correct |
186 ms |
40208 KB |
Output is correct |
67 |
Correct |
150 ms |
35892 KB |
Output is correct |
68 |
Correct |
81 ms |
25264 KB |
Output is correct |
69 |
Correct |
92 ms |
25236 KB |
Output is correct |
70 |
Correct |
144 ms |
38128 KB |
Output is correct |
71 |
Correct |
114 ms |
36300 KB |
Output is correct |
72 |
Correct |
5 ms |
9744 KB |
Output is correct |
73 |
Correct |
10 ms |
11064 KB |
Output is correct |
74 |
Correct |
11 ms |
10964 KB |
Output is correct |
75 |
Correct |
7 ms |
9740 KB |
Output is correct |
76 |
Correct |
6 ms |
9744 KB |
Output is correct |
77 |
Correct |
12 ms |
11804 KB |
Output is correct |
78 |
Correct |
13 ms |
11180 KB |
Output is correct |
79 |
Correct |
8 ms |
11092 KB |
Output is correct |
80 |
Correct |
10 ms |
11164 KB |
Output is correct |
81 |
Correct |
6 ms |
9684 KB |
Output is correct |
82 |
Correct |
5 ms |
9744 KB |
Output is correct |
83 |
Correct |
5 ms |
9684 KB |
Output is correct |
84 |
Correct |
6 ms |
9684 KB |
Output is correct |
85 |
Correct |
5 ms |
9684 KB |
Output is correct |
86 |
Correct |
49 ms |
16756 KB |
Output is correct |
87 |
Correct |
60 ms |
16888 KB |
Output is correct |
88 |
Correct |
48 ms |
16840 KB |
Output is correct |
89 |
Correct |
15 ms |
11988 KB |
Output is correct |
90 |
Correct |
9 ms |
11220 KB |
Output is correct |
91 |
Correct |
40 ms |
16136 KB |
Output is correct |
92 |
Correct |
62 ms |
16192 KB |
Output is correct |
93 |
Correct |
8 ms |
9744 KB |
Output is correct |
94 |
Correct |
180 ms |
45184 KB |
Output is correct |
95 |
Correct |
165 ms |
44852 KB |
Output is correct |
96 |
Correct |
146 ms |
44388 KB |
Output is correct |
97 |
Correct |
182 ms |
43184 KB |
Output is correct |
98 |
Correct |
134 ms |
45628 KB |
Output is correct |
99 |
Correct |
186 ms |
41420 KB |
Output is correct |
100 |
Correct |
162 ms |
38672 KB |
Output is correct |
101 |
Correct |
165 ms |
39104 KB |
Output is correct |
102 |
Correct |
149 ms |
32708 KB |
Output is correct |
103 |
Correct |
139 ms |
37692 KB |
Output is correct |
104 |
Correct |
143 ms |
38048 KB |
Output is correct |
105 |
Correct |
118 ms |
37532 KB |
Output is correct |
106 |
Correct |
124 ms |
36436 KB |
Output is correct |
107 |
Correct |
133 ms |
36436 KB |
Output is correct |
108 |
Correct |
108 ms |
43040 KB |
Output is correct |
109 |
Correct |
132 ms |
42980 KB |
Output is correct |
110 |
Correct |
85 ms |
26700 KB |
Output is correct |
111 |
Correct |
94 ms |
26700 KB |
Output is correct |
112 |
Correct |
161 ms |
32632 KB |
Output is correct |
113 |
Correct |
125 ms |
32652 KB |
Output is correct |