| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 310820 |
2020-10-08T05:22:43 Z |
ttnhuy313 |
Izlet (COI19_izlet) |
C++14 |
|
1401 ms |
74740 KB |
#include<bits/stdc++.h>
using namespace std;
class dsu {
public:
vector<int> par, ct;
dsu(int sz) {
ct.resize(sz, 1);
par.resize(sz);
iota(par.begin(), par.end(), 0);
}
int get_par(int nd) {
return (par[nd] == nd ? nd : get_par(par[nd]));
}
bool Merge(int a, int b) {
a = get_par(a), b = get_par(b);
if (a == b) return false;
if (ct[a] < ct[b]) swap(a, b);
ct[a] += ct[b];
par[b] = a;
return true;
}
};
int main () {
ios_base::sync_with_stdio(0);
cin.tie(0);
int type, n;
cin >> type >> n;
vector<vector<int>> adj(n, vector<int>(n));
for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j) cin >> adj[i][j];
dsu graph(n);
vector<pair<int, int>> edges;
vector<vector<int>> g(n);
auto add_edge = [&](int val) {
for (int i = 0; i < n; ++i) for (int j = n - 1; j >= 0; --j) {
if (adj[i][j] == val && graph.Merge(i, j)) {
edges.emplace_back(i, j);
g[i].push_back(j);
g[j].push_back(i);
}
}
};
add_edge(1); add_edge(2);
dsu col(n);
for (int i = 0; i < n; ++i) {
for (auto ad : g[i]) {
function<int(int, int)> dfs = [&](int nd, int par) {
int res = -1;
if (adj[nd][ad] == adj[nd][i]) {
return nd;
}
for (auto el : g[nd]) {
if (el == par) continue;
res = max(dfs(el, nd), res);
}
return res;
};
int source = dfs(ad, i);
if (source != -1) {
col.Merge(source, i);
}
}
}
for (int i = 0; i < n; ++i) cout << col.get_par(i) + 1 << ' ';
for (auto el : edges) cout << '\n' << el.first + 1 << ' ' << el.second + 1;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
512 KB |
Output is correct |
| 2 |
Correct |
888 ms |
53880 KB |
Output is correct |
| 3 |
Correct |
885 ms |
53752 KB |
Output is correct |
| 4 |
Correct |
723 ms |
53688 KB |
Output is correct |
| 5 |
Correct |
775 ms |
53328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
617 ms |
53880 KB |
Output is correct |
| 2 |
Correct |
752 ms |
53624 KB |
Output is correct |
| 3 |
Correct |
900 ms |
74104 KB |
Output is correct |
| 4 |
Correct |
1054 ms |
74740 KB |
Output is correct |
| 5 |
Correct |
618 ms |
53528 KB |
Output is correct |
| 6 |
Correct |
673 ms |
60680 KB |
Output is correct |
| 7 |
Correct |
503 ms |
44920 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
512 KB |
Output is correct |
| 2 |
Correct |
888 ms |
53880 KB |
Output is correct |
| 3 |
Correct |
885 ms |
53752 KB |
Output is correct |
| 4 |
Correct |
723 ms |
53688 KB |
Output is correct |
| 5 |
Correct |
775 ms |
53328 KB |
Output is correct |
| 6 |
Correct |
617 ms |
53880 KB |
Output is correct |
| 7 |
Correct |
752 ms |
53624 KB |
Output is correct |
| 8 |
Correct |
900 ms |
74104 KB |
Output is correct |
| 9 |
Correct |
1054 ms |
74740 KB |
Output is correct |
| 10 |
Correct |
618 ms |
53528 KB |
Output is correct |
| 11 |
Correct |
673 ms |
60680 KB |
Output is correct |
| 12 |
Correct |
503 ms |
44920 KB |
Output is correct |
| 13 |
Correct |
840 ms |
54648 KB |
Output is correct |
| 14 |
Correct |
1401 ms |
61560 KB |
Output is correct |
| 15 |
Correct |
668 ms |
53624 KB |
Output is correct |
| 16 |
Correct |
730 ms |
58236 KB |
Output is correct |
| 17 |
Correct |
719 ms |
60180 KB |
Output is correct |
| 18 |
Correct |
634 ms |
53752 KB |
Output is correct |
| 19 |
Correct |
907 ms |
53640 KB |
Output is correct |
| 20 |
Correct |
764 ms |
53640 KB |
Output is correct |
| 21 |
Correct |
937 ms |
54392 KB |
Output is correct |
| 22 |
Correct |
860 ms |
54008 KB |
Output is correct |
| 23 |
Correct |
966 ms |
54520 KB |
Output is correct |
| 24 |
Correct |
780 ms |
60792 KB |
Output is correct |
| 25 |
Correct |
710 ms |
53756 KB |
Output is correct |
