# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
1037357 |
2024-07-28T14:53:54 Z |
juicy |
Meetings (JOI19_meetings) |
C++17 |
|
420 ms |
852 KB |
#include <bits/stdc++.h>
#include "meetings.h"
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
const int MAX = 2e3;
int sz[MAX];
bool del[MAX];
vector<int> g[MAX];
void add(int u, int v) {
g[u].push_back(v);
g[v].push_back(u);
}
void ers(int u, int v) {
g[u].erase(find(g[u].begin(), g[u].end(), v));
g[v].erase(find(g[v].begin(), g[v].end(), u));
}
void split(int p, int u, int z, int x) {
ers(p, u);
add(p, z);
add(z, u);
if (z != x) {
add(z, x);
}
}
void dfs(int u, int p) {
sz[u] = 1;
for (int v : g[u]) {
if (!del[v] && v != p) {
dfs(v, u);
sz[u] += sz[v];
}
}
}
int findCen(int u, int p, int tot) {
for (int v : g[u]) {
if (!del[v] && v != p && sz[v] * 2 > tot) {
return findCen(v, u, tot);
}
}
return u;
}
void solve(int u, int x) {
dfs(u, u);
u = findCen(u, u, sz[u]);
dfs(u, u);
del[u] = 1;
vector<int> cands;
for (auto v : g[u]) {
if (!del[v]) {
cands.push_back(v);
}
}
sort(cands.begin(), cands.end(), [&](int u, int v) {
return sz[u] > sz[v];
});
for (int i = 0; i + 1 < cands.size(); i += 2) {
int a = cands[i], b = cands[i + 1], z = Query(x, a, b);
if (z == a || z == b) {
solve(z, x);
return;
}
if (z ^ u) {
int y = Query(u, x, a) == u ? b : a;
split(u, y, z, x);
return;
}
}
if (cands.size() & 1) {
int v = cands.back(), z = Query(x, v, u);
if (z == v) {
solve(z, x);
return;
} else if (z ^ u) {
split(u, v, z, x);
return;
}
}
add(u, x);
}
void Solve(int N) {
add(0, 1);
for (int i = 2; i < N; ++i) {
if (!g[i].size()) {
fill(del, del + N, 0);
solve(0, i);
}
}
for (int i = 0; i < N; ++i) {
for (int j : g[i]) {
if (i < j) {
Bridge(i, j);
}
}
}
}
Compilation message
meetings.cpp: In function 'void solve(int, int)':
meetings.cpp:71:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
71 | for (int i = 0; i + 1 < cands.size(); i += 2) {
| ~~~~~~^~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
344 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
344 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
0 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
344 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
344 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
344 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Correct |
0 ms |
344 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
0 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
0 ms |
344 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
27 |
Correct |
3 ms |
344 KB |
Output is correct |
28 |
Correct |
3 ms |
556 KB |
Output is correct |
29 |
Correct |
3 ms |
344 KB |
Output is correct |
30 |
Correct |
3 ms |
344 KB |
Output is correct |
31 |
Correct |
2 ms |
344 KB |
Output is correct |
32 |
Correct |
3 ms |
344 KB |
Output is correct |
33 |
Correct |
4 ms |
560 KB |
Output is correct |
34 |
Correct |
5 ms |
560 KB |
Output is correct |
35 |
Correct |
5 ms |
344 KB |
Output is correct |
36 |
Correct |
4 ms |
344 KB |
Output is correct |
37 |
Correct |
5 ms |
580 KB |
Output is correct |
38 |
Correct |
8 ms |
344 KB |
Output is correct |
39 |
Correct |
7 ms |
600 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
153 ms |
600 KB |
Output is correct |
2 |
Correct |
146 ms |
704 KB |
Output is correct |
3 |
Correct |
144 ms |
696 KB |
Output is correct |
4 |
Correct |
148 ms |
600 KB |
Output is correct |
5 |
Correct |
138 ms |
704 KB |
Output is correct |
6 |
Correct |
125 ms |
600 KB |
Output is correct |
7 |
Correct |
210 ms |
848 KB |
Output is correct |
8 |
Correct |
239 ms |
848 KB |
Output is correct |
9 |
Correct |
221 ms |
716 KB |
Output is correct |
10 |
Correct |
210 ms |
716 KB |
Output is correct |
11 |
Correct |
262 ms |
716 KB |
Output is correct |
12 |
Correct |
197 ms |
848 KB |
Output is correct |
13 |
Correct |
152 ms |
848 KB |
Output is correct |
14 |
Correct |
194 ms |
848 KB |
Output is correct |
15 |
Correct |
171 ms |
716 KB |
Output is correct |
16 |
Correct |
187 ms |
728 KB |
Output is correct |
17 |
Correct |
217 ms |
852 KB |
Output is correct |
18 |
Correct |
166 ms |
720 KB |
Output is correct |
19 |
Correct |
178 ms |
708 KB |
Output is correct |
20 |
Correct |
205 ms |
720 KB |
Output is correct |
21 |
Correct |
183 ms |
848 KB |
Output is correct |
22 |
Correct |
168 ms |
848 KB |
Output is correct |
23 |
Correct |
198 ms |
732 KB |
Output is correct |
24 |
Correct |
177 ms |
712 KB |
Output is correct |
25 |
Correct |
180 ms |
724 KB |
Output is correct |
26 |
Correct |
190 ms |
708 KB |
Output is correct |
27 |
Correct |
180 ms |
716 KB |
Output is correct |
28 |
Correct |
255 ms |
844 KB |
Output is correct |
29 |
Correct |
212 ms |
848 KB |
Output is correct |
30 |
Correct |
224 ms |
848 KB |
Output is correct |
31 |
Correct |
220 ms |
720 KB |
Output is correct |
32 |
Correct |
420 ms |
844 KB |
Output is correct |
33 |
Correct |
356 ms |
848 KB |
Output is correct |
34 |
Correct |
2 ms |
344 KB |
Output is correct |
35 |
Correct |
2 ms |
344 KB |
Output is correct |
36 |
Correct |
2 ms |
344 KB |
Output is correct |
37 |
Correct |
2 ms |
344 KB |
Output is correct |
38 |
Correct |
2 ms |
344 KB |
Output is correct |
39 |
Correct |
3 ms |
344 KB |
Output is correct |
40 |
Correct |
3 ms |
344 KB |
Output is correct |
41 |
Correct |
4 ms |
540 KB |
Output is correct |
42 |
Correct |
4 ms |
344 KB |
Output is correct |
43 |
Correct |
3 ms |
556 KB |
Output is correct |
44 |
Correct |
5 ms |
600 KB |
Output is correct |
45 |
Correct |
5 ms |
576 KB |
Output is correct |
46 |
Correct |
5 ms |
580 KB |
Output is correct |
47 |
Correct |
0 ms |
344 KB |
Output is correct |
48 |
Correct |
0 ms |
344 KB |
Output is correct |
49 |
Correct |
0 ms |
344 KB |
Output is correct |
50 |
Correct |
0 ms |
344 KB |
Output is correct |
51 |
Correct |
0 ms |
344 KB |
Output is correct |
52 |
Correct |
0 ms |
344 KB |
Output is correct |
53 |
Correct |
0 ms |
344 KB |
Output is correct |
54 |
Correct |
0 ms |
344 KB |
Output is correct |
55 |
Correct |
0 ms |
344 KB |
Output is correct |
56 |
Correct |
0 ms |
344 KB |
Output is correct |
57 |
Correct |
0 ms |
596 KB |
Output is correct |
58 |
Correct |
1 ms |
344 KB |
Output is correct |
59 |
Correct |
0 ms |
344 KB |
Output is correct |
60 |
Correct |
0 ms |
344 KB |
Output is correct |
61 |
Correct |
0 ms |
344 KB |
Output is correct |
62 |
Correct |
0 ms |
344 KB |
Output is correct |
63 |
Correct |
0 ms |
344 KB |
Output is correct |
64 |
Correct |
0 ms |
344 KB |
Output is correct |
65 |
Correct |
0 ms |
344 KB |
Output is correct |
66 |
Correct |
1 ms |
344 KB |
Output is correct |
67 |
Correct |
0 ms |
344 KB |
Output is correct |
68 |
Correct |
0 ms |
344 KB |
Output is correct |
69 |
Correct |
0 ms |
344 KB |
Output is correct |
70 |
Correct |
0 ms |
344 KB |
Output is correct |
71 |
Correct |
0 ms |
344 KB |
Output is correct |
72 |
Correct |
0 ms |
344 KB |
Output is correct |