| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 960366 | 2024-04-10T10:14:06 Z | TAhmed33 | Longest Trip (IOI23_longesttrip) | C++17 | 886 ms | 2100 KB |
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
vector <int> adj[256], tree[256];
bool vis[256];
struct DSU {
int p[256], sze[256];
void init (int n) {
for (int i = 0; i < n; i++) {
p[i] = i; sze[i] = 1;
}
}
int find (int x) {
return p[x] == x ? x : p[x] = find(p[x]);
}
bool merge (int a, int b) {
a = find(a), b = find(b);
if (a == b) return 0;
if (sze[a] > sze[b]) swap(a, b);
sze[b] += sze[a]; p[a] = b;
return 1;
}
} cur;
vector <int> x;
int p[256];
void dfs (int pos) {
vis[pos] = 1; x.push_back(pos);
for (auto j : adj[pos]) {
if (vis[j]) continue;
tree[pos].push_back(j);
p[j] = pos;
dfs(j);
}
}
int get (int x) {
if (tree[x].empty()) return x;
return get(tree[x][0]);
}
vector <int> longest_trip (int n, int d) {
for (int i = 0; i < n; i++) adj[i].clear(), tree[i].clear();
memset(p, -1, sizeof(p));
cur.init(n);
for (int i = 0; i < n - 1; i++) {
for (int j = i + 1; j < n; j++) {
if (are_connected({i}, {j})) {
adj[i].push_back(j);
adj[j].push_back(i);
cur.merge(i, j);
}
}
}
bool flag = 0;
for (int i = 0; i < n - 1; i++) {
for (int j = i + 1; j < n; j++) {
flag |= cur.merge(i, j);
}
}
if (flag) {
memset(vis, 0, sizeof(vis));
vector <int> ret;
for (int i = 0; i < n; i++) {
if (!vis[i]) {
x.clear(); dfs(i);
if ((int)x.size() > (int)ret.size()) ret = x;
}
}
return ret;
}
memset(vis, 0, sizeof(vis));
x.clear(); dfs(0);
int pos = -1;
for (int i = 0; i < n; i++) {
if ((int)tree[i].size() == 2) {
pos = i;
}
}
if (pos == -1) return x;
int u = get(tree[pos][0]), v = get(tree[pos][1]);
if (p[pos] != -1 && find(adj[p[pos]].begin(), adj[p[pos]].end(), u) == adj[p[pos]].end()) {
swap(u, v); swap(tree[pos][0], tree[pos][1]);
}
if (p[pos] == -1 && find(adj[pos].begin(), adj[pos].end(), u) == adj[pos].end()) {
swap(u, v); swap(tree[pos][0], tree[pos][1]);
}
u = tree[pos][0], v = tree[pos][1];
while (!x.empty() && x.back() != p[pos]) x.pop_back();
vector <int> l;
while (true) {
l.push_back(u);
if (tree[u].empty()) break;
u = tree[u][0];
}
reverse(l.begin(), l.end());
for (auto i : l) x.push_back(i);
x.push_back(pos);
while (true) {
x.push_back(v);
if (tree[v].empty()) break;
v = tree[v][0];
}
return x;
}
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 344 KB | Output is correct |
| 2 | Correct | 152 ms | 1632 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 8 ms | 344 KB | Output is correct |
| 2 | Correct | 22 ms | 344 KB | Output is correct |
| 3 | Correct | 116 ms | 604 KB | Output is correct |
| 4 | Correct | 355 ms | 1144 KB | Output is correct |
| 5 | Correct | 747 ms | 1376 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 6 ms | 344 KB | Output is correct |
| 2 | Correct | 20 ms | 344 KB | Output is correct |
| 3 | Correct | 133 ms | 856 KB | Output is correct |
| 4 | Correct | 379 ms | 1228 KB | Output is correct |
| 5 | Correct | 736 ms | 1576 KB | Output is correct |
| 6 | Correct | 7 ms | 344 KB | Output is correct |
| 7 | Correct | 19 ms | 544 KB | Output is correct |
| 8 | Correct | 127 ms | 856 KB | Output is correct |
| 9 | Correct | 259 ms | 1368 KB | Output is correct |
| 10 | Correct | 762 ms | 1152 KB | Output is correct |
| 11 | Correct | 793 ms | 1372 KB | Output is correct |
| 12 | Correct | 755 ms | 1240 KB | Output is correct |
| 13 | Correct | 774 ms | 1376 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 8 ms | 344 KB | Output is correct |
| 2 | Correct | 23 ms | 344 KB | Output is correct |
| 3 | Correct | 151 ms | 852 KB | Output is correct |
| 4 | Correct | 384 ms | 1484 KB | Output is correct |
| 5 | Correct | 702 ms | 1368 KB | Output is correct |
| 6 | Correct | 7 ms | 344 KB | Output is correct |
| 7 | Correct | 24 ms | 344 KB | Output is correct |
| 8 | Correct | 131 ms | 856 KB | Output is correct |
| 9 | Correct | 304 ms | 1372 KB | Output is correct |
| 10 | Correct | 760 ms | 1160 KB | Output is correct |
| 11 | Correct | 741 ms | 1280 KB | Output is correct |
| 12 | Correct | 767 ms | 1388 KB | Output is correct |
| 13 | Correct | 769 ms | 1644 KB | Output is correct |
| 14 | Correct | 6 ms | 344 KB | Output is correct |
| 15 | Correct | 13 ms | 344 KB | Output is correct |
| 16 | Correct | 38 ms | 344 KB | Output is correct |
| 17 | Correct | 82 ms | 856 KB | Output is correct |
| 18 | Correct | 126 ms | 600 KB | Output is correct |
| 19 | Correct | 269 ms | 996 KB | Output is correct |
| 20 | Correct | 243 ms | 1624 KB | Output is correct |
| 21 | Correct | 767 ms | 1676 KB | Output is correct |
| 22 | Correct | 768 ms | 1700 KB | Output is correct |
| 23 | Correct | 728 ms | 1108 KB | Output is correct |
| 24 | Correct | 724 ms | 1644 KB | Output is correct |
| 25 | Correct | 9 ms | 344 KB | Output is correct |
| 26 | Correct | 9 ms | 344 KB | Output is correct |
| 27 | Correct | 23 ms | 344 KB | Output is correct |
| 28 | Correct | 21 ms | 344 KB | Output is correct |
| 29 | Correct | 19 ms | 344 KB | Output is correct |
| 30 | Correct | 159 ms | 1112 KB | Output is correct |
| 31 | Correct | 164 ms | 972 KB | Output is correct |
| 32 | Correct | 146 ms | 856 KB | Output is correct |
| 33 | Correct | 257 ms | 848 KB | Output is correct |
| 34 | Correct | 266 ms | 1124 KB | Output is correct |
| 35 | Correct | 260 ms | 1112 KB | Output is correct |
| 36 | Correct | 713 ms | 1120 KB | Output is correct |
| 37 | Correct | 761 ms | 1364 KB | Output is correct |
| 38 | Correct | 799 ms | 1356 KB | Output is correct |
| 39 | Correct | 723 ms | 1848 KB | Output is correct |
| 40 | Correct | 732 ms | 1660 KB | Output is correct |
| 41 | Correct | 746 ms | 1264 KB | Output is correct |
| 42 | Correct | 825 ms | 1648 KB | Output is correct |
| 43 | Correct | 713 ms | 1200 KB | Output is correct |
| 44 | Correct | 765 ms | 1520 KB | Output is correct |
| 45 | Correct | 10 ms | 344 KB | Output is correct |
| 46 | Correct | 10 ms | 596 KB | Output is correct |
| 47 | Correct | 22 ms | 344 KB | Output is correct |
| 48 | Correct | 20 ms | 344 KB | Output is correct |
| 49 | Correct | 24 ms | 344 KB | Output is correct |
| 50 | Correct | 173 ms | 972 KB | Output is correct |
| 51 | Correct | 174 ms | 856 KB | Output is correct |
| 52 | Correct | 168 ms | 596 KB | Output is correct |
| 53 | Correct | 311 ms | 740 KB | Output is correct |
| 54 | Correct | 245 ms | 1368 KB | Output is correct |
| 55 | Correct | 268 ms | 984 KB | Output is correct |
| 56 | Correct | 741 ms | 1148 KB | Output is correct |
| 57 | Correct | 767 ms | 1776 KB | Output is correct |
| 58 | Correct | 718 ms | 1612 KB | Output is correct |
| 59 | Correct | 684 ms | 1720 KB | Output is correct |
| 60 | Correct | 750 ms | 1820 KB | Output is correct |
| 61 | Correct | 764 ms | 1476 KB | Output is correct |
| 62 | Correct | 727 ms | 1256 KB | Output is correct |
| 63 | Correct | 708 ms | 1472 KB | Output is correct |
| 64 | Correct | 694 ms | 1548 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 7 ms | 344 KB | Output is correct |
| 2 | Correct | 21 ms | 340 KB | Output is correct |
| 3 | Partially correct | 127 ms | 600 KB | Output is partially correct |
| 4 | Partially correct | 346 ms | 1012 KB | Output is partially correct |
| 5 | Partially correct | 736 ms | 1320 KB | Output is partially correct |
| 6 | Correct | 7 ms | 344 KB | Output is correct |
| 7 | Correct | 26 ms | 344 KB | Output is correct |
| 8 | Partially correct | 121 ms | 856 KB | Output is partially correct |
| 9 | Partially correct | 258 ms | 856 KB | Output is partially correct |
| 10 | Partially correct | 762 ms | 1260 KB | Output is partially correct |
| 11 | Partially correct | 734 ms | 1648 KB | Output is partially correct |
| 12 | Partially correct | 727 ms | 1776 KB | Output is partially correct |
| 13 | Partially correct | 742 ms | 1880 KB | Output is partially correct |
| 14 | Correct | 6 ms | 344 KB | Output is correct |
| 15 | Correct | 12 ms | 344 KB | Output is correct |
| 16 | Correct | 40 ms | 344 KB | Output is correct |
| 17 | Partially correct | 80 ms | 600 KB | Output is partially correct |
| 18 | Partially correct | 110 ms | 600 KB | Output is partially correct |
| 19 | Partially correct | 310 ms | 716 KB | Output is partially correct |
| 20 | Partially correct | 260 ms | 1128 KB | Output is partially correct |
| 21 | Correct | 12 ms | 340 KB | Output is correct |
| 22 | Correct | 11 ms | 344 KB | Output is correct |
| 23 | Correct | 27 ms | 344 KB | Output is correct |
| 24 | Correct | 25 ms | 344 KB | Output is correct |
| 25 | Correct | 20 ms | 344 KB | Output is correct |
| 26 | Partially correct | 198 ms | 1112 KB | Output is partially correct |
| 27 | Partially correct | 178 ms | 856 KB | Output is partially correct |
| 28 | Partially correct | 179 ms | 856 KB | Output is partially correct |
| 29 | Partially correct | 269 ms | 1128 KB | Output is partially correct |
| 30 | Partially correct | 267 ms | 876 KB | Output is partially correct |
| 31 | Partially correct | 276 ms | 856 KB | Output is partially correct |
| 32 | Correct | 8 ms | 344 KB | Output is correct |
| 33 | Correct | 10 ms | 344 KB | Output is correct |
| 34 | Correct | 22 ms | 344 KB | Output is correct |
| 35 | Correct | 32 ms | 344 KB | Output is correct |
| 36 | Correct | 28 ms | 344 KB | Output is correct |
| 37 | Partially correct | 166 ms | 860 KB | Output is partially correct |
| 38 | Partially correct | 153 ms | 1112 KB | Output is partially correct |
| 39 | Partially correct | 217 ms | 604 KB | Output is partially correct |
| 40 | Partially correct | 256 ms | 1468 KB | Output is partially correct |
| 41 | Partially correct | 262 ms | 1116 KB | Output is partially correct |
| 42 | Partially correct | 272 ms | 976 KB | Output is partially correct |
| 43 | Partially correct | 736 ms | 1416 KB | Output is partially correct |
| 44 | Partially correct | 759 ms | 1480 KB | Output is partially correct |
| 45 | Partially correct | 705 ms | 1156 KB | Output is partially correct |
| 46 | Partially correct | 715 ms | 1652 KB | Output is partially correct |
| 47 | Partially correct | 747 ms | 1560 KB | Output is partially correct |
| 48 | Partially correct | 749 ms | 1116 KB | Output is partially correct |
| 49 | Partially correct | 738 ms | 1408 KB | Output is partially correct |
| 50 | Partially correct | 788 ms | 1580 KB | Output is partially correct |
| 51 | Partially correct | 886 ms | 1688 KB | Output is partially correct |
| 52 | Partially correct | 773 ms | 1108 KB | Output is partially correct |
| 53 | Partially correct | 732 ms | 1236 KB | Output is partially correct |
| 54 | Partially correct | 727 ms | 1648 KB | Output is partially correct |
| 55 | Partially correct | 789 ms | 1440 KB | Output is partially correct |
| 56 | Partially correct | 813 ms | 1316 KB | Output is partially correct |
| 57 | Partially correct | 781 ms | 1536 KB | Output is partially correct |
| 58 | Partially correct | 738 ms | 1464 KB | Output is partially correct |
| 59 | Partially correct | 704 ms | 1844 KB | Output is partially correct |
| 60 | Partially correct | 726 ms | 1232 KB | Output is partially correct |
| 61 | Partially correct | 744 ms | 1532 KB | Output is partially correct |
| 62 | Partially correct | 761 ms | 1764 KB | Output is partially correct |
| 63 | Partially correct | 741 ms | 1632 KB | Output is partially correct |
| 64 | Partially correct | 786 ms | 1468 KB | Output is partially correct |
| 65 | Partially correct | 737 ms | 1808 KB | Output is partially correct |
| 66 | Partially correct | 727 ms | 1436 KB | Output is partially correct |
| 67 | Partially correct | 723 ms | 1048 KB | Output is partially correct |
| 68 | Partially correct | 767 ms | 1064 KB | Output is partially correct |
| 69 | Partially correct | 780 ms | 1784 KB | Output is partially correct |
| 70 | Partially correct | 707 ms | 1952 KB | Output is partially correct |
| 71 | Partially correct | 754 ms | 1592 KB | Output is partially correct |
| 72 | Partially correct | 703 ms | 1676 KB | Output is partially correct |
| 73 | Partially correct | 752 ms | 1684 KB | Output is partially correct |
| 74 | Partially correct | 713 ms | 1344 KB | Output is partially correct |
| 75 | Partially correct | 759 ms | 1264 KB | Output is partially correct |
| 76 | Partially correct | 737 ms | 1368 KB | Output is partially correct |
| 77 | Partially correct | 742 ms | 1836 KB | Output is partially correct |
| 78 | Partially correct | 702 ms | 1484 KB | Output is partially correct |
| 79 | Partially correct | 670 ms | 1460 KB | Output is partially correct |
| 80 | Partially correct | 752 ms | 2100 KB | Output is partially correct |
| 81 | Partially correct | 749 ms | 1404 KB | Output is partially correct |
| 82 | Partially correct | 728 ms | 1108 KB | Output is partially correct |