| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 737709 |
2023-05-07T15:03:18 Z |
iee |
Keys (IOI21_keys) |
C++17 |
|
931 ms |
58580 KB |
#include <bits/stdc++.h>
using namespace std;
struct dsu {
int n;
vector<int> p;
dsu(int _n): n(_n), p(_n) {
iota(begin(p), end(p), 0);
}
int leader(int x) {
return p[x] == x ? x : p[x] = leader(p[x]);
}
};
vector<int> find_reachable(vector<int> r, vector<int> U, vector<int> V, vector<int> C) {
const auto n = int(r.size()), m = int(U.size());
vector<vector<pair<int, int>>> e(n);
for (int i = 0; i < m; ++i) {
e[U[i]].emplace_back(V[i], C[i]);
e[V[i]].emplace_back(U[i], C[i]);
}
dsu d(n);
auto num = numeric_limits<size_t>::max();
vector<int> ans, solved(n);
while (true) {
vector nodes(n, vector<int>());
vector<int> vis(n), changed, appear(n), res;
auto BFS = [&] (int S) {
for (int x: res)
appear[r[x]] = 0;
for (int x: changed)
nodes[x].clear();
res.clear(), changed.clear();
queue<int> Q;
Q.push(S);
while (!empty(Q)) {
const auto u = Q.front();
Q.pop();
if (S != d.leader(u)) {
vis[d.leader(u)] = 1;
d.p[S] = d.leader(u);
return;
}
if (vis[u]) continue;
vis[u] = 1, res.push_back(u);
if (!appear[r[u]]) {
appear[r[u]] = 1;
for (int v: nodes[r[u]]) Q.push(v);
}
for (auto [v, c]: e[u])
if (appear[c]) Q.push(v);
else nodes[c].push_back(v), changed.push_back(c);
}
solved[S] = 1;
if (size(res) < num) num = size(ans = res);
else if (size(res) == num)
for (int x: res) ans.push_back(x);
};
bool hav = 0;
for (int i = 0; i < n; ++i)
if (d.leader(i) == i && !vis[i] && !solved[i])
hav = 1, BFS(i);
if (!hav) break;
}
vector<int> ret(n);
for (int x: ans) ret[x] = 1;
return ret;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
304 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
304 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
300 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
296 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
300 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
304 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
304 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
300 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
296 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
300 KB |
Output is correct |
| 27 |
Correct |
2 ms |
596 KB |
Output is correct |
| 28 |
Correct |
2 ms |
596 KB |
Output is correct |
| 29 |
Correct |
2 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
340 KB |
Output is correct |
| 32 |
Correct |
1 ms |
340 KB |
Output is correct |
| 33 |
Correct |
1 ms |
308 KB |
Output is correct |
| 34 |
Correct |
1 ms |
340 KB |
Output is correct |
| 35 |
Correct |
1 ms |
312 KB |
Output is correct |
| 36 |
Correct |
2 ms |
468 KB |
Output is correct |
| 37 |
Correct |
2 ms |
468 KB |
Output is correct |
| 38 |
Correct |
2 ms |
568 KB |
Output is correct |
| 39 |
Correct |
2 ms |
568 KB |
Output is correct |
| 40 |
Correct |
1 ms |
440 KB |
Output is correct |
| 41 |
Correct |
2 ms |
468 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
265 ms |
30756 KB |
Output is correct |
| 11 |
Correct |
294 ms |
49108 KB |
Output is correct |
| 12 |
Correct |
50 ms |
8544 KB |
Output is correct |
| 13 |
Correct |
340 ms |
42788 KB |
Output is correct |
| 14 |
Correct |
214 ms |
46472 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
212 KB |
Output is correct |
| 8 |
Correct |
1 ms |
212 KB |
Output is correct |
| 9 |
Correct |
1 ms |
212 KB |
Output is correct |
| 10 |
Correct |
1 ms |
212 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
304 KB |
Output is correct |
| 13 |
Correct |
1 ms |
212 KB |
Output is correct |
| 14 |
Correct |
1 ms |
212 KB |
Output is correct |
| 15 |
Correct |
1 ms |
212 KB |
Output is correct |
| 16 |
Correct |
1 ms |
212 KB |
Output is correct |
| 17 |
Correct |
1 ms |
304 KB |
Output is correct |
| 18 |
Correct |
1 ms |
212 KB |
Output is correct |
| 19 |
Correct |
1 ms |
212 KB |
Output is correct |
| 20 |
Correct |
1 ms |
300 KB |
Output is correct |
| 21 |
Correct |
1 ms |
212 KB |
Output is correct |
| 22 |
Correct |
1 ms |
296 KB |
Output is correct |
| 23 |
Correct |
1 ms |
212 KB |
Output is correct |
| 24 |
Correct |
1 ms |
212 KB |
Output is correct |
| 25 |
Correct |
1 ms |
212 KB |
Output is correct |
| 26 |
Correct |
1 ms |
300 KB |
Output is correct |
| 27 |
Correct |
2 ms |
596 KB |
Output is correct |
| 28 |
Correct |
2 ms |
596 KB |
Output is correct |
| 29 |
Correct |
2 ms |
596 KB |
Output is correct |
| 30 |
Correct |
1 ms |
340 KB |
Output is correct |
| 31 |
Correct |
1 ms |
340 KB |
Output is correct |
| 32 |
Correct |
1 ms |
340 KB |
Output is correct |
| 33 |
Correct |
1 ms |
308 KB |
Output is correct |
| 34 |
Correct |
1 ms |
340 KB |
Output is correct |
| 35 |
Correct |
1 ms |
312 KB |
Output is correct |
| 36 |
Correct |
2 ms |
468 KB |
Output is correct |
| 37 |
Correct |
2 ms |
468 KB |
Output is correct |
| 38 |
Correct |
2 ms |
568 KB |
Output is correct |
| 39 |
Correct |
2 ms |
568 KB |
Output is correct |
| 40 |
Correct |
1 ms |
440 KB |
Output is correct |
| 41 |
Correct |
2 ms |
468 KB |
Output is correct |
| 42 |
Correct |
265 ms |
30756 KB |
Output is correct |
| 43 |
Correct |
294 ms |
49108 KB |
Output is correct |
| 44 |
Correct |
50 ms |
8544 KB |
Output is correct |
| 45 |
Correct |
340 ms |
42788 KB |
Output is correct |
| 46 |
Correct |
214 ms |
46472 KB |
Output is correct |
| 47 |
Correct |
1 ms |
304 KB |
Output is correct |
| 48 |
Correct |
1 ms |
212 KB |
Output is correct |
| 49 |
Correct |
1 ms |
300 KB |
Output is correct |
| 50 |
Correct |
220 ms |
47272 KB |
Output is correct |
| 51 |
Correct |
206 ms |
49620 KB |
Output is correct |
| 52 |
Correct |
314 ms |
36876 KB |
Output is correct |
| 53 |
Correct |
265 ms |
36940 KB |
Output is correct |
| 54 |
Correct |
284 ms |
36852 KB |
Output is correct |
| 55 |
Correct |
274 ms |
31396 KB |
Output is correct |
| 56 |
Correct |
386 ms |
50920 KB |
Output is correct |
| 57 |
Correct |
273 ms |
51428 KB |
Output is correct |
| 58 |
Correct |
327 ms |
58580 KB |
Output is correct |
| 59 |
Correct |
466 ms |
45296 KB |
Output is correct |
| 60 |
Correct |
360 ms |
41072 KB |
Output is correct |
| 61 |
Correct |
424 ms |
42772 KB |
Output is correct |
| 62 |
Correct |
894 ms |
37212 KB |
Output is correct |
| 63 |
Correct |
200 ms |
37220 KB |
Output is correct |
| 64 |
Correct |
4 ms |
980 KB |
Output is correct |
| 65 |
Correct |
4 ms |
980 KB |
Output is correct |
| 66 |
Correct |
931 ms |
37468 KB |
Output is correct |
| 67 |
Correct |
20 ms |
4860 KB |
Output is correct |
| 68 |
Correct |
34 ms |
7868 KB |
Output is correct |
| 69 |
Correct |
453 ms |
45296 KB |
Output is correct |
| 70 |
Correct |
66 ms |
15508 KB |
Output is correct |
| 71 |
Correct |
219 ms |
47184 KB |
Output is correct |
| 72 |
Correct |
452 ms |
45452 KB |
Output is correct |
| 73 |
Correct |
895 ms |
38152 KB |
Output is correct |
