| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 521601 |
2022-02-02T14:16:56 Z |
eecs |
Keys (IOI21_keys) |
C++17 |
|
1608 ms |
53216 KB |
#include "keys.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> find_reachable(vector<int> r, vector<int> U, vector<int> V, vector<int> C) {
int n = r.size(), mn = INT_MAX;
vector<vector<array<int, 2>>> G(n);
for (int i = 0; i < U.size(); i++) {
G[U[i]].push_back({V[i], C[i]});
G[V[i]].push_back({U[i], C[i]});
}
vector<int> ans, perm(n), pos(n), vis(n, -1), visc(n, -1);
vector<vector<int>> cand(n);
iota(perm.begin(), perm.end(), 0);
vector<int> cnt(n);
for (int i = 0; i < n; i++) {
for (auto &e : G[i]) if (e[1] == r[i]) cnt[i]++;
}
sort(perm.begin(), perm.end(), [&](int u, int v) { return cnt[u] < cnt[v]; });
for (int i = 0; i < n; i++) {
pos[perm[i]] = i;
}
for (int i = 0; i < n; i++) {
sort(G[i].begin(), G[i].end(), [&](array<int, 2> p, array<int, 2> q) { return pos[p[0]] < pos[q[0]]; });
}
queue<int> Q;
vector<bool> solved(n);
vector<int> ver, col;
for (int x : perm) {
ver = {x}, col.clear();
while (!Q.empty()) Q.pop();
Q.push(x), vis[x] = x, solved[x] = 1;
while (!Q.empty()) {
int u = Q.front(); Q.pop();
if (visc[r[u]] ^ x) {
for (int v : cand[r[u]]) if (vis[v] ^ x) {
ver.push_back(v), Q.push(v), vis[v] = x;
if (solved[v] || ver.size() > mn) goto nxt;
}
visc[r[u]] = x;
}
for (auto &e : G[u]) if (vis[e[0]] ^ x) {
if (visc[e[1]] == x) {
ver.push_back(e[0]), Q.push(e[0]), vis[e[0]] = x;
if (solved[e[0]] || ver.size() > mn) goto nxt;
} else {
col.push_back(e[1]);
if (solved[e[0]]) cand[e[1]].clear();
cand[e[1]].push_back(e[0]);
}
}
}
if (ver.size() < mn) mn = ver.size(), ans = ver;
else copy(ver.begin(), ver.end(), back_inserter(ans));
nxt:;
for (int c : col) cand[c].clear();
}
vector<int> res(n);
for (int x : ans) res[x] = 1;
return res;
}
Compilation message
keys.cpp: In function 'std::vector<int> find_reachable(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
keys.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | for (int i = 0; i < U.size(); i++) {
| ~~^~~~~~~~~~
keys.cpp:38:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
38 | if (solved[v] || ver.size() > mn) goto nxt;
| ~~~~~~~~~~~^~~~
keys.cpp:45:37: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
45 | if (solved[e[0]] || ver.size() > mn) goto nxt;
| ~~~~~~~~~~~^~~~
keys.cpp:53:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
53 | if (ver.size() < mn) mn = ver.size(), ans = ver;
| ~~~~~~~~~~~^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
0 ms |
204 KB |
Output is correct |
| 23 |
Correct |
0 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
0 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
0 ms |
204 KB |
Output is correct |
| 23 |
Correct |
0 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
0 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
2 ms |
588 KB |
Output is correct |
| 28 |
Correct |
2 ms |
588 KB |
Output is correct |
| 29 |
Correct |
2 ms |
588 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
332 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
2 ms |
460 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
3 ms |
460 KB |
Output is correct |
| 39 |
Correct |
2 ms |
460 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
2 ms |
460 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
176 ms |
24176 KB |
Output is correct |
| 11 |
Correct |
373 ms |
48220 KB |
Output is correct |
| 12 |
Correct |
38 ms |
8004 KB |
Output is correct |
| 13 |
Correct |
267 ms |
38420 KB |
Output is correct |
| 14 |
Correct |
191 ms |
42716 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
0 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
204 KB |
Output is correct |
| 22 |
Correct |
0 ms |
204 KB |
Output is correct |
| 23 |
Correct |
0 ms |
204 KB |
Output is correct |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
0 ms |
204 KB |
Output is correct |
| 26 |
Correct |
1 ms |
204 KB |
Output is correct |
| 27 |
Correct |
2 ms |
588 KB |
Output is correct |
| 28 |
Correct |
2 ms |
588 KB |
Output is correct |
| 29 |
Correct |
2 ms |
588 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
1 ms |
332 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
2 ms |
460 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
3 ms |
460 KB |
Output is correct |
| 39 |
Correct |
2 ms |
460 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
2 ms |
460 KB |
Output is correct |
| 42 |
Correct |
176 ms |
24176 KB |
Output is correct |
| 43 |
Correct |
373 ms |
48220 KB |
Output is correct |
| 44 |
Correct |
38 ms |
8004 KB |
Output is correct |
| 45 |
Correct |
267 ms |
38420 KB |
Output is correct |
| 46 |
Correct |
191 ms |
42716 KB |
Output is correct |
| 47 |
Correct |
0 ms |
204 KB |
Output is correct |
| 48 |
Correct |
1 ms |
204 KB |
Output is correct |
| 49 |
Correct |
1 ms |
204 KB |
Output is correct |
| 50 |
Correct |
179 ms |
44640 KB |
Output is correct |
| 51 |
Correct |
171 ms |
40744 KB |
Output is correct |
| 52 |
Correct |
244 ms |
32060 KB |
Output is correct |
| 53 |
Correct |
219 ms |
32084 KB |
Output is correct |
| 54 |
Correct |
228 ms |
32112 KB |
Output is correct |
| 55 |
Correct |
216 ms |
24940 KB |
Output is correct |
| 56 |
Correct |
303 ms |
44936 KB |
Output is correct |
| 57 |
Correct |
270 ms |
44580 KB |
Output is correct |
| 58 |
Correct |
361 ms |
53216 KB |
Output is correct |
| 59 |
Correct |
1477 ms |
47412 KB |
Output is correct |
| 60 |
Correct |
286 ms |
41908 KB |
Output is correct |
| 61 |
Correct |
302 ms |
42292 KB |
Output is correct |
| 62 |
Correct |
243 ms |
35168 KB |
Output is correct |
| 63 |
Correct |
153 ms |
39108 KB |
Output is correct |
| 64 |
Correct |
4 ms |
964 KB |
Output is correct |
| 65 |
Correct |
4 ms |
1072 KB |
Output is correct |
| 66 |
Correct |
237 ms |
35148 KB |
Output is correct |
| 67 |
Correct |
20 ms |
4944 KB |
Output is correct |
| 68 |
Correct |
33 ms |
8352 KB |
Output is correct |
| 69 |
Correct |
1433 ms |
47448 KB |
Output is correct |
| 70 |
Correct |
65 ms |
16320 KB |
Output is correct |
| 71 |
Correct |
201 ms |
48728 KB |
Output is correct |
| 72 |
Correct |
1608 ms |
47440 KB |
Output is correct |
| 73 |
Correct |
238 ms |
35272 KB |
Output is correct |
